valuetype.cpp

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//
// valuetype.cpp,v 1.32 2003/11/04 05:21:28 dhinton Exp
//

// ============================================================================
//
// = LIBRARY
//    TAO IDL
//
// = FILENAME
//    valuetype.cpp
//
// = DESCRIPTION
//    Visitor generating code for Valuetypes. This is a generic visitor.
//
// = AUTHOR
//    Torsten Kuepper  <[e-mail]>
//    based on interface.cpp from Aniruddha Gokhale
//
// ============================================================================

ACE_RCSID (be_visitor_valuetype, 
           valuetype, 
           "valuetype.cpp,v 1.32 2003/11/04 05:21:28 dhinton Exp")

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

be_visitor_valuetype::~be_visitor_valuetype (void)
{
}

// This method must be overridden by the derived valuetype visitors.
int
be_visitor_valuetype::visit_valuetype (be_valuetype *)
{
  return -1;
}

int
be_visitor_valuetype::visit_valuetype_scope (be_valuetype *node)
{
  int n_processed = 0;
  this->elem_number_ = 0;

  for (UTL_ScopeActiveIterator si (node, UTL_Scope::IK_decls);
       !si.is_done ();
       si.next())
    {
      AST_Decl *d = si.item ();

      if (!d)
        {
          ACE_ERROR_RETURN ((LM_ERROR,
                             "(%N:%l) be_visitor_scope::visit_scope - "
                             "bad node in this scope\n"), 
                            -1);
        }

      AST_Field *field = AST_Field::narrow_from_decl (d);

      if (field && field->visibility () == AST_Field::vis_PRIVATE)
        {
          continue;      
          // Ignore private fields in this run
          // AST_Attribute derives from AST_Field, so test for
          // vis_PRIVATE is ok (the attribute has it set to vis_NA)
        }

      be_decl *bd = be_decl::narrow_from_decl (d);
      // Set the scope node as "node" in which the code is being
      // generated so that elements in the node's scope can use it
      // for code generation.

      this->ctx_->scope (node->decl ());
      this->ctx_->node (bd);
      this->elem_number_++;

      if (bd == 0 || bd->accept (this) == -1)
        {
          ACE_ERROR_RETURN ((LM_ERROR,
                             "(%N:%l) be_visitor_scope::visit_scope - "
                             "codegen for scope failed\n"), 
                            -1);
          
        }
    }

  this->elem_number_ = 0;

  for (UTL_ScopeActiveIterator sj (node, UTL_Scope::IK_decls);
       !sj.is_done ();
       sj.next())
    {
      AST_Decl *d = sj.item ();

      if (!d)
        {
          ACE_ERROR_RETURN ((LM_ERROR,
                             "(%N:%l) be_visitor_scope::visit_scope - "
                             "bad node in this scope\n"), 
                            -1);
        }

      AST_Field *field = AST_Field::narrow_from_decl (d);

      if (!field 
          || (field && field->visibility () != AST_Field::vis_PRIVATE))
        {
          // Only private fields.
          continue;
        }

      ++ n_processed;

      if (n_processed == 1)
        {
          this->begin_private ();
        }

      be_decl *bd = be_decl::narrow_from_decl (d);
      // Set the scope node as "node" in which the code is being
      // generated so that elements in the node's scope can use it
      // for code generation.

      this->ctx_->scope (node->decl ());
      this->ctx_->node (bd);
      this->elem_number_++;

      if (bd == 0 || bd->accept (this) == -1)
        {
          ACE_ERROR_RETURN ((LM_ERROR,
                             "(%N:%l) be_visitor_scope::visit_scope - "
                             "codegen for scope failed\n"),
                            -1);
        }
    }

  return 0;
}

// These two are called from visit_valuetype_scope()
void
be_visitor_valuetype::begin_public ()
{
  // In derived visitors print "public:" in class definition
}

void
be_visitor_valuetype::begin_private ()
{
  // In derived visitors print "protected:" in class definition
}

// All common visit methods for valuetype visitor.

int
be_visitor_valuetype::visit_attribute (be_attribute *node)
{
  this->ctx_->node (node);
  this->ctx_->attribute (node);

  be_operation get_op (node->field_type (),
                       AST_Operation::OP_noflags,
                       node->name (),
                       0,
                       0);

  get_op.set_name ((UTL_IdList *) node->name ()->copy ());

  if (this->visit_operation (&get_op) == -1)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_attribute::"
                         "visit_attribute - "
                         "codegen for get_attribute failed\n"),
                        -1);
    }

  if (node->readonly ())
    {
      // Nothing else to do.
      return 0;
    }

  Identifier id ("void");

  UTL_ScopedName sn (&id,
                     0);

  be_predefined_type rt (AST_PredefinedType::PT_void,
                         &sn);

  // Argument type is the same as the attribute type.
  be_argument arg (AST_Argument::dir_IN,
                   node->field_type (),
                   node->name ());

  arg.set_name ((UTL_IdList *) node->name ()->copy ());

  // Create the operation.
  be_operation set_op (&rt,
                       AST_Operation::OP_noflags,
                       node->name (),
                       0,
                       0);

  set_op.set_name ((UTL_IdList *) node->name ()->copy ());
  set_op.be_add_argument (&arg);

 if (this->visit_operation (&set_op) == -1)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_attribute::"
                         "visit_attribute - "
                         "codegen for set_attribute failed\n"),
                        -1);
    }

  return 0;
}


int
be_visitor_valuetype::visit_constant (be_constant *node)
{
  be_visitor_context ctx (*this->ctx_);
  ctx.node (node);
  int status = 0;

  switch (this->ctx_->state ())
    {
    case TAO_CodeGen::TAO_ROOT_CH:
      {
        be_visitor_constant_ch visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_CS:
      {
        be_visitor_constant_cs visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_VALUETYPE_OBV_CH:
    case TAO_CodeGen::TAO_VALUETYPE_OBV_CI:
    case TAO_CodeGen::TAO_VALUETYPE_OBV_CS:
    case TAO_CodeGen::TAO_ROOT_ANY_OP_CH:
    case TAO_CodeGen::TAO_ROOT_ANY_OP_CS:
    case TAO_CodeGen::TAO_ROOT_CDR_OP_CH:
    case TAO_CodeGen::TAO_ROOT_CDR_OP_CI:
    case TAO_CodeGen::TAO_ROOT_CDR_OP_CS:
    case TAO_CodeGen::TAO_ROOT_CI:
    case TAO_CodeGen::TAO_ROOT_SH:
    case TAO_CodeGen::TAO_ROOT_IH:
    case TAO_CodeGen::TAO_ROOT_IS:
    case TAO_CodeGen::TAO_ROOT_SI:
    case TAO_CodeGen::TAO_ROOT_SS:
      return 0; // Nothing to be done.
    default:
      {
        ACE_ERROR_RETURN ((LM_ERROR,
                           "(%N:%l) be_visitor_valuetype::"
                           "visit_constant - "
                           "Bad context state\n"), 
                          -1);
      }
    }

  if (status == -1)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_valuetype::"
                         "visit_constant - "
                         "failed to accept visitor\n"),
                        -1);
    }

  return 0;
}

int
be_visitor_valuetype::visit_enum (be_enum *node)
{
  be_visitor_context ctx (*this->ctx_);
  ctx.node (node);
  int status = 0;

  switch (this->ctx_->state ())
    {
    case TAO_CodeGen::TAO_ROOT_CH:
      {
        be_visitor_enum_ch visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_CS:
      {
        be_visitor_enum_cs visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_ANY_OP_CH:
      {
        be_visitor_enum_any_op_ch visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_ANY_OP_CS:
      {
        be_visitor_enum_any_op_cs visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_CDR_OP_CH:
      {
        be_visitor_enum_cdr_op_ch visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_CDR_OP_CI:
      {
        be_visitor_enum_cdr_op_ci visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_CDR_OP_CS:
    case TAO_CodeGen::TAO_VALUETYPE_OBV_CH:
    case TAO_CodeGen::TAO_VALUETYPE_OBV_CI:
    case TAO_CodeGen::TAO_VALUETYPE_OBV_CS:
    case TAO_CodeGen::TAO_ROOT_CI:
    case TAO_CodeGen::TAO_ROOT_SH:
    case TAO_CodeGen::TAO_ROOT_IH:
    case TAO_CodeGen::TAO_ROOT_IS:
    case TAO_CodeGen::TAO_ROOT_SI:
    case TAO_CodeGen::TAO_ROOT_SS:
      return 0; // Nothing to be done.
    default:
      {
        ACE_ERROR_RETURN ((LM_ERROR,
                           "(%N:%l) be_visitor_valuetype::"
                           "visit_enum - "
                           "Bad context state\n"), 
                          -1);
      }
    }

  if (status == -1)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_valuetype::"
                         "visit_enum - "
                         "failed to accept visitor\n"),  
                        -1);
    }

  return 0;
}

int
be_visitor_valuetype::visit_exception (be_exception *node)
{
  be_visitor_context ctx (*this->ctx_);
  ctx.node (node);
  int status = 0;

  switch (this->ctx_->state ())
    {
    case TAO_CodeGen::TAO_ROOT_CH:
      {
        be_visitor_exception_ch visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_CI:
      {        
        be_visitor_exception_ci visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_CS:
      {
        be_visitor_exception_cs visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_ANY_OP_CH:
      {
        be_visitor_exception_any_op_ch visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_ANY_OP_CS:
      {
        be_visitor_exception_any_op_cs visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_CDR_OP_CH:
      {
        be_visitor_exception_cdr_op_ch visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_CDR_OP_CI:
      {
        be_visitor_exception_cdr_op_ci visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_CDR_OP_CS:
      {
        be_visitor_exception_cdr_op_cs visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    default:
      return 0; // Nothing to be done.
    }

  if (status == -1)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_interface::"
                         "visit_exception - "
                         "failed to accept visitor\n"),  
                        -1);
    }

  return 0;
}

int
be_visitor_valuetype::visit_structure (be_structure *node)
{
  be_visitor_context ctx (*this->ctx_);
  ctx.node (node);
  int status = 0;

  switch (this->ctx_->state ())
    {
    case TAO_CodeGen::TAO_ROOT_CH:
      {
        be_visitor_structure_ch visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_CI:
      {
        be_visitor_structure_ci visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_CS:
      {
        be_visitor_structure_cs visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_ANY_OP_CH:
      {
        be_visitor_structure_any_op_ch visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_ANY_OP_CS:
      {
        be_visitor_structure_any_op_cs visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_CDR_OP_CH:
      {
        be_visitor_structure_cdr_op_ch visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_CDR_OP_CI:
      {
        be_visitor_structure_cdr_op_ci visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    case TAO_CodeGen::TAO_ROOT_CDR_OP_CS:
      {
        be_visitor_structure_cdr_op_cs visitor (&ctx);
        status = node->accept (&visitor);
        break;
      }
    default:
      return 0; // Nothing to be done.
    }

  if (status == -1)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_visitor_valuetype::"
                         "visit_structure - "
                         "failed to accept visitor\n"),  
                        -1);
    }