cdr_op_ci.cpp

来自「这是广泛使用的通信开源项目,对于大容量,高并发的通讯要求完全能够胜任,他广泛可用」· C++ 代码 · 共 1,019 行 · 第 1/3 页

      *os << "(strm << _tao_aggregate." << f->local_name () << ".in ())";

      break;
    case TAO_CodeGen::TAO_CDR_SCOPE:
      // Nothing to be done.
      break;
    default:
      // Error.
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_field_cdr_op_ci::"
                         "visit_array - "
                         "bad substate\n"),
                        -1);
    }

  return 0;
}

// Visit structure type.
int
be_visitor_field_cdr_op_ci::visit_structure (be_structure *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_structure - "
                         "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_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_);


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

      // Generate the inline code for structs.
      be_visitor_structure_cdr_op_ci visitor (&ctx);

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

  return 0;
}

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

  // The node to be visited in the base primitve type that gets typedefed.
  be_type *bt = node->primitive_base_type ();

  if (bt == 0 || bt->accept (this) == -1)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_field_cdr_op_ci::"
                         "visit_typedef - "
                         "Bad primitive type\n"),
                        -1);
    }

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

// Visit union type.
int
be_visitor_field_cdr_op_ci::visit_union (be_union *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_union - "
                         "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_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
                                                  // 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 inline code for union.
      be_visitor_union_cdr_op_ci visitor (&ctx);

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

  return 0;
}

// ****************************************************************

be_visitor_cdr_op_field_decl::be_visitor_cdr_op_field_decl (
    be_visitor_context *ctx
  )
  : be_visitor_scope (ctx)
{
}

// This is a field, but the action depends on the type of the field,
// use this visitor to detect the type of the field.
// Notice that this is why the parent visitor (who create us) cannot
// do the job, because it may have another purpose for some or all of
// the visit_* methods; in other words, while running a visitor to
// generate CDR operators for structures we cannot use that one to
// generate the code of each field, because visit_struct already has a
// meaning in that visitor.
int
be_visitor_cdr_op_field_decl::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_cdr_op_field_decl::"
                         "visit_field - "
                         "Bad field type\n"),
                        -1);
    }

  // @@ Shouldn't this be saved in the visitor and not the context?!
  this->ctx_->node (node);

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

  return 0;
}

// Visit array
int
be_visitor_cdr_op_field_decl::visit_array (be_array *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_cdr_op_field_decl::"
                         "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];

  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 underscope
      // 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:
    case TAO_CodeGen::TAO_CDR_OUTPUT:
      *os << fname << "_forany "
          << "_tao_aggregate_" << f->local_name () << be_idt << be_idt_nl
          << "(ACE_const_cast (" << be_idt << be_idt_nl
          << fname << "_slice*," << be_nl
          << "_tao_aggregate." << f->local_name () << be_uidt_nl
          << ")" << be_uidt << be_uidt_nl
          << ");" << be_uidt_nl;

      break;
    case TAO_CodeGen::TAO_CDR_SCOPE:
    default:
      // Error.
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_cdr_op_field_decl::"
                         "visit_array - "
                         "bad sub state\n"),
                        -1);
    }

  return 0;
}


// Visit typedef type.
int
be_visitor_cdr_op_field_decl::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 == 0 || bt->accept (this) == -1)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_cdr_op_field_decl::"
                         "visit_typedef - "
                         "Bad primitive type\n"),
                        -1);
    }

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