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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 Sun Microsystems
*
* 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
*/
#include <drizzled/server_includes.h>
#include CSTDINT_H
#include <drizzled/function/unsigned.h>
#include <drizzled/current_session.h>
#include <drizzled/error.h>
void Item_func_unsigned::print(String *str, enum_query_type query_type)
{
str->append(STRING_WITH_LEN("cast("));
args[0]->print(str, query_type);
str->append(STRING_WITH_LEN(" as unsigned)"));
}
int64_t Item_func_unsigned::val_int()
{
int64_t value;
int error;
if (args[0]->cast_to_int_type() == DECIMAL_RESULT)
{
my_decimal tmp, *dec= args[0]->val_decimal(&tmp);
if (!(null_value= args[0]->null_value))
my_decimal2int(E_DEC_FATAL_ERROR, dec, 1, &value);
else
value= 0;
return value;
}
else if (args[0]->cast_to_int_type() != STRING_RESULT ||
args[0]->result_as_int64_t())
{
value= args[0]->val_int();
null_value= args[0]->null_value;
return value;
}
value= val_int_from_str(&error);
if (error < 0)
push_warning(current_session, DRIZZLE_ERROR::WARN_LEVEL_WARN, ER_UNKNOWN_ERROR,
"Cast to unsigned converted negative integer to it's "
"positive complement");
return value;
}
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