~drizzle-trunk/drizzle/development

/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-

 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:

 *

 *  Copyright (C) 2008 Sun Microsystems, Inc.

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; version 2 of the License.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

#pragma once

namespace drizzled

{

class TableList;

class Name_resolution_context;

/*

  Store and restore the current state of a name resolution context.

*/

class Name_resolution_context_state

{

private:

  TableList *save_table_list;

  TableList *save_first_name_resolution_table;

  TableList *save_next_name_resolution_table;

  bool        save_resolve_in_select_list;

  TableList *save_next_local;

public:

  Name_resolution_context_state() {}          /* Remove gcc warning */

  /* Save the state of a name resolution context. */

  void save_state(Name_resolution_context *context, TableList *table_list);

  /* Restore a name resolution context from saved state. */

  void restore_state(Name_resolution_context *context, TableList *table_list);

  TableList *get_first_name_resolution_table();

};

} /* namespace drizzled */