cdr_op_ci.cpp

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

#include "be_visitor_array/cdr_op_ci.h"
#include "be_visitor_enum/cdr_op_ci.h"
#include "be_visitor_sequence/cdr_op_ci.h"
#include "be_visitor_structure/cdr_op_ci.h"
#include "be_visitor_union/cdr_op_ci.h"

ACE_RCSID (be_visitor_field,
           cdr_op_ci,
           "cdr_op_ci.cpp,v 1.15 2003/10/28 18:30:37 bala Exp")

// **********************************************
//  Visitor for field in the client stubs file.
// **********************************************

// Constructor.
be_visitor_field_cdr_op_ci::be_visitor_field_cdr_op_ci (
    be_visitor_context *ctx
  )
  : be_visitor_decl (ctx)
{
}

// Destructor.
be_visitor_field_cdr_op_ci::~be_visitor_field_cdr_op_ci (void)
{
}

// Visit the field node.
int
be_visitor_field_cdr_op_ci::visit_field (be_field *node)
{
  be_type *bt = be_type::narrow_from_decl (node->field_type ());

  if (bt == 0)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_field_cdr_op_ci::"
                         "visit_field - "
                         "Bad field type\n"),
                        -1);
    }

  // Save the node.
  this->ctx_->node (node);

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

  return 0;
}

// Visit array,
int
be_visitor_field_cdr_op_ci::visit_array (be_array *node)
{
  TAO_OutStream *os = this->ctx_->stream ();
  be_field *f = this->ctx_->be_node_as_field ();

  if (f == 0)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_field_cdr_op_ci::"
                         "visit_array - "
                         "cannot retrieve field node\n"),
                        -1);
    }

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

  // 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 () == 0 // 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 generation 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 << "(strm >> "
          << "_tao_aggregate_" << f->local_name () << ")";

      return 0;
    case TAO_CodeGen::TAO_CDR_OUTPUT:
      *os << "(strm << "
          << "_tao_aggregate_" << f->local_name () << ")";

      return 0;
    case TAO_CodeGen::TAO_CDR_SCOPE:
      // This is done in cdr_op_cs and hacked into *.i.
      break;
    default:
      // Error.
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_field_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 () == 0 // Not a typedef.
      && node->is_child (this->ctx_->scope ()))
    {
      // This is the case for anonymous arrays. Generate the <<, >> operators
      // for the type defined by the anonymous array.

      // 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_);

      // Set the node to be the node being visited. The scope is
      // still the same.
      ctx.node (node);

      // First generate the  declaration.
      be_visitor_array_cdr_op_ci visitor (&ctx);

      if (node->accept (&visitor) == -1)
        {
          ACE_ERROR_RETURN ((LM_ERROR,
                             "(%N:%l) be_visitor_field_cdr_op_ci::"
                             "visit_array - "
                             "codegen failed\n"),
                            -1);
        }
    }

  return 0;
}

// Visit enum type.
int
be_visitor_field_cdr_op_ci::visit_enum (be_enum *node)
{
  TAO_OutStream *os = this->ctx_->stream ();

  // Retrieve the field node.
  be_field *f = this->ctx_->be_node_as_field ();

  if (f == 0)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_field_cdr_op_ci::"
                         "visit_array - "
                         "cannot retrieve field 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 << "(strm >> _tao_aggregate." << f->local_name () << ")";

      return 0;
    case TAO_CodeGen::TAO_CDR_OUTPUT:
      *os << "(strm << _tao_aggregate." << 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_field_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_);

      // Set the node to be the node being visited. The scope
      // is still the same.
      ctx.node (node);

      // Generate the typcode for enums.
      be_visitor_enum_cdr_op_ci visitor (&ctx);

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

  return 0;
}

// Visit interface type.
int
be_visitor_field_cdr_op_ci::visit_interface (be_interface *node)
{
  TAO_OutStream *os = this->ctx_->stream ();
  be_field *f = this->ctx_->be_node_as_field ();

  if (!f)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_field_cdr_op_ci::"
                         "visit_interface - "
                         "cannot retrieve field 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 << "(strm >> _tao_aggregate." << f->local_name () << ".out ())";

      break;
    case TAO_CodeGen::TAO_CDR_OUTPUT:
      if (node->is_defined ())
        {
          *os << "CORBA::Object::marshal (" << be_idt << be_idt_nl
              << "_tao_aggregate." << f->local_name () << ".in ()," << be_nl
              << "strm" << be_uidt_nl
              << ")" << be_uidt;
        }
      else
        {
          AST_Decl *parent = ScopeAsDecl (node->defined_in ());

          if (parent != 0 && parent->node_type () != AST_Decl::NT_root)
            {
              *os << parent->name () << "::";
            }

          *os << "TAO::Objref_Traits<" << node->name () << ">::tao_marshal ("
              << be_idt << be_idt_nl
              << "_tao_aggregate." << f->local_name () << ".in ()," << be_nl
              << "strm" << be_uidt_nl
              << ")" << be_uidt;
        }

      break;
    case TAO_CodeGen::TAO_CDR_SCOPE:
      // Nothing to be done because an interface cannot be declared inside a
      // structure.
      break;
    default:
      // Error.
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_field_cdr_op_ci::"
                         "visit_interface - "
                         "bad sub state\n"),
                        -1);
    }

  return 0;
}

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

  // Retrieve the field node.
  be_field *f = this->ctx_->be_node_as_field ();

  if (f == 0)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_field_cdr_op_ci::"
                         "visit_interface_fwd - "
                         "cannot retrieve field node\n"),
                        -1);
    }