/*

COPYRIGHT

Copyright 1992, 1993, 1994 Sun Microsystems, Inc.  Printed in the United
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This product is protected by copyright and distributed under the following
license restricting its use.

The Interface Definition Language Compiler Front End (CFE) is made
available for your use provided that you include this license and copyright
notice on all media and documentation and the software program in which
this product is incorporated in whole or part. You may copy and extend
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INTERFACE DEFINITION LANGUAGE CFE IS PROVIDED AS IS WITH NO WARRANTIES OF
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*/

// AST_Root nodes represent the roots of ASTs.
// AST_Root is a subclass of AST_Module, and is defined to allow BEs
// to subclass it to associate their own information with an entire
// AST.

#include "ast_root.h"
#include "ast_sequence.h"
#include "ast_string.h"
#include "ast_array.h"
#include "ast_visitor.h"
#include "utl_identifier.h"
#include "ace/OS_NS_string.h"
#include "ace/OS_Memory.h"

AST_Decl::NodeType const
AST_Root::NT = AST_Decl::NT_root;

AST_Root::AST_Root (UTL_ScopedName *n)
  : COMMON_Base (),
    AST_Decl (AST_Decl::NT_root,
              n),
    UTL_Scope (AST_Decl::NT_root),
    AST_Module (n)
{
}

AST_Root::~AST_Root ()
{
}

// Overrides the one in UTL_Scope - this one doesn't
// count the predefined types.
unsigned long
AST_Root::nmembers ()
{
  unsigned long retval = 0;

  for (UTL_ScopeActiveIterator si (this, UTL_Scope::IK_decls);
        !si.is_done ();
        si.next ())
    {
      if (si.item ()->node_type () == AST_Decl::NT_pre_defined)
        {
          continue;
        }

      ++retval;
    }

  return retval;
}

// Add this AST_Sequence to the locally defined types in this scope.
AST_Sequence *
AST_Root::fe_add_sequence (AST_Sequence *t)
{
  if (t == nullptr)
    {
      return nullptr;
    }

  this->add_to_local_types (t);
  return t;
}

// Add this AST_String to the locally defined types in this scope.
AST_String *
AST_Root::fe_add_string (AST_String *t)
{
  if (t == nullptr)
    {
      return nullptr;
    }

  this->add_to_local_types (t);
  return t;
}

// Add this AST_Array to the locally defined types in this scope.
AST_Array *
AST_Root::fe_add_array (AST_Array *t)
{
  if (t == nullptr)
    {
      return nullptr;
    }

  this->add_to_local_types (t);
  return t;
}

// Redefinition of inherited virtual operations.

// Dump this AST_Root node to the ostream o.
void
AST_Root::dump (ACE_OSTREAM_TYPE &o)
{
  UTL_Scope::dump (o);
}

int
AST_Root::ast_accept (ast_visitor *visitor)
{
  return visitor->visit_root (this);
}

void
AST_Root::destroy ()
{
  long i = 0;
  AST_Decl *d = nullptr;

  // Just destroy and delete everything but the CORBA
  // module, and the 'void' keyword, in case we are
  // processing multiple IDL files.
  // Final cleanup will be done in fini().
  long end = this->pd_decls_used;

  for (i = 2; i < end; ++i)
    {
      d = this->pd_decls[i];

      d->destroy ();
      delete d;
      d = nullptr;
      --this->pd_decls_used;
    }

  // Same goes for the references and the name
  // references, leave the first 2.

  // This array of pointers holds references, no need
  // for destruction. The array itself will be cleaned
  // up when AST_Root::fini() calls UTL_Scope::destroy ().
  for (i = 2; i < this->pd_referenced_used; ++i)
    {
      this->pd_referenced[i] = nullptr;
    }

  this->pd_referenced_used = 2;

  for (i = 2; i < this->pd_name_referenced_used; ++i)
    {
      Identifier *id = this->pd_name_referenced[i];
      id->destroy ();
      delete id;
      id = nullptr;
    }

  this->pd_name_referenced_used = 2;
}

void
AST_Root::fini ()
{
  this->UTL_Scope::destroy ();
  this->AST_Decl::destroy ();
}