Drizzled Public API Documentation

lookup_symbol.cc

00001 /* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
00002  *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
00003  *
00004  *  Copyright (C) 2009 Sun Microsystems, Inc.
00005  *
00006  *  This program is free software; you can redistribute it and/or modify
00007  *  it under the terms of the GNU General Public License as published by
00008  *  the Free Software Foundation; version 2 of the License.
00009  *
00010  *  This program is distributed in the hope that it will be useful,
00011  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00012  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013  *  GNU General Public License for more details.
00014  *
00015  *  You should have received a copy of the GNU General Public License
00016  *  along with this program; if not, write to the Free Software
00017  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00018  */
00019 
00020 #include <config.h>
00021 #include <drizzled/item/num.h>
00022 #include <drizzled/error.h>
00023 #include <drizzled/session.h>
00024 #include <drizzled/sql_base.h>
00025 #include <drizzled/lookup_symbol.h>
00026 #include <drizzled/comp_creator.h>
00027 #include <drizzled/sql_lex.h>
00028 
00029 #include <drizzled/lex_symbol.h>
00030 #include <drizzled/function_hash.h>
00031 #include <drizzled/symbol_hash.h>
00032 
00033 namespace drizzled
00034 {
00035 
00036 const SYMBOL *lookup_symbol(const char *s, unsigned int len, bool function)
00037 {
00038   const SYMBOL* ret_sym= NULL;
00039   if (function)
00040   {
00041     ret_sym= function_hash::in_word_set(s, len);
00042     if (ret_sym && ret_sym->tok)
00043       return ret_sym;
00044   }
00045   ret_sym= symbol_hash::in_word_set(s, len);
00046   if (ret_sym && ret_sym->tok)
00047     return ret_sym;
00048   return NULL;
00049 }
00050 
00051 } /* namespace drizzled */