// ast_sequence.cpp,v 1.16 2002/12/29 13:50:03 bala Exp

/*

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*/

// AST_Sequence nodes represent IDL sequence declarations.
// AST_Sequence is a subclass of AST_ConcreteType.
// AST_Sequence nodes have a maximum size (an AST_Expression which
// must evaluate to a positive integer) and a base type (a subclass
// of AST_Type).

#include "ast_sequence.h"
#include "ast_expression.h"
#include "ast_visitor.h"
#include "utl_identifier.h"
#include "ace/Log_Msg.h"

ACE_RCSID (ast, 
           ast_sequence, 
           "ast_sequence.cpp,v 1.16 2002/12/29 13:50:03 bala Exp")

AST_Sequence::AST_Sequence (void)
 : pd_max_size (0),
   pd_base_type (0)
{
  // A sequence data type is always VARIABLE.
  this->size_type (AST_Type::VARIABLE);
}

AST_Sequence::AST_Sequence (AST_Expression *ms,
                            AST_Type *bt,
                            UTL_ScopedName *n,
                            idl_bool local,
                            idl_bool abstract)
 : AST_Decl (AST_Decl::NT_sequence,
             n,
             I_TRUE),
   COMMON_Base (bt->is_local () || local,
                abstract),
   pd_max_size (ms),
   pd_base_type (bt)
{
  // Check if we are bounded or unbounded. An expression value of 0 means
  // unbounded.
  if (ms->ev ()->u.ulval == 0)
    {
      this->unbounded_ = I_TRUE;
    }
  else
    {
      this->unbounded_ = I_FALSE;
    }

  // A sequence data type is always VARIABLE.
  this->size_type (AST_Type::VARIABLE);
}

AST_Sequence::~AST_Sequence (void)
{
}

// Public operations.

idl_bool
AST_Sequence::in_recursion (AST_Type *node)
{
  if (node == 0)
    {
      // There has to be a parameter.
      ACE_ERROR_RETURN ((LM_ERROR,
                         ACE_TEXT ("(%N:%l) AST_Sequence::")
                         ACE_TEXT ("in_recursion - ")
                         ACE_TEXT ("bad parameter node\n")),
                        0);
    }

  AST_Type *type = AST_Type::narrow_from_decl (this->base_type ());

  if (!type)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         ACE_TEXT ("(%N:%l) AST_Sequence::")
                         ACE_TEXT ("in_recursion - ")
                         ACE_TEXT ("bad base type\n")),
                        0);
    }

  if (!ACE_OS::strcmp (node->full_name (),
                       type->full_name ()))
    {
      // They match.
      return 1;
    }
  else
    {
      // Not in recursion.
      return 0;
    }
}

// Redefinition of inherited virtual operations.

// Dump this AST_Sequence node to the ostream o.
void
AST_Sequence::dump (ACE_OSTREAM_TYPE &o)
{
  o << "sequence <";
  this->pd_base_type->dump (o);
  o << ", ";
  this->pd_max_size->dump (o);
  o << ">";
}

int
AST_Sequence::ast_accept (ast_visitor *visitor)
{
  return visitor->visit_sequence (this);
}

// Data accessors.

AST_Expression *
AST_Sequence::max_size (void)
{
  return this->pd_max_size;
}

AST_Type *
AST_Sequence::base_type (void)
{
  return this->pd_base_type;
}

idl_bool
AST_Sequence::unbounded (void) const
{
  return this->unbounded_;
}

// Narrowing.
IMPL_NARROW_METHODS1(AST_Sequence, AST_ConcreteType)
IMPL_NARROW_FROM_DECL(AST_Sequence)
