New file |
0,0 → 1,115 |
<?php |
/** |
* PHPExcel |
* |
* Copyright (c) 2006 - 2013 PHPExcel |
* |
* This library is free software; you can redistribute it and/or |
* modify it under the terms of the GNU Lesser General Public |
* License as published by the Free Software Foundation; either |
* version 2.1 of the License, or (at your option) any later version. |
* |
* This library 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 |
* Lesser General Public License for more details. |
* |
* You should have received a copy of the GNU Lesser General Public |
* License along with this library; if not, write to the Free Software |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
* |
* @category PHPExcel |
* @package PHPExcel_Calculation |
* @copyright Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel) |
* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL |
* @version ##VERSION##, ##DATE## |
*/ |
|
|
/** |
* PHPExcel_Calculation_Token_Stack |
* |
* @category PHPExcel_Calculation_Token_Stack |
* @package PHPExcel_Calculation |
* @copyright Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel) |
*/ |
class PHPExcel_Calculation_Token_Stack { |
|
/** |
* The parser stack for formulae |
* |
* @var mixed[] |
*/ |
private $_stack = array(); |
|
/** |
* Count of entries in the parser stack |
* |
* @var integer |
*/ |
private $_count = 0; |
|
|
/** |
* Return the number of entries on the stack |
* |
* @return integer |
*/ |
public function count() { |
return $this->_count; |
} // function count() |
|
/** |
* Push a new entry onto the stack |
* |
* @param mixed $type |
* @param mixed $value |
* @param mixed $reference |
*/ |
public function push($type, $value, $reference = NULL) { |
$this->_stack[$this->_count++] = array('type' => $type, |
'value' => $value, |
'reference' => $reference |
); |
if ($type == 'Function') { |
$localeFunction = PHPExcel_Calculation::_localeFunc($value); |
if ($localeFunction != $value) { |
$this->_stack[($this->_count - 1)]['localeValue'] = $localeFunction; |
} |
} |
} // function push() |
|
/** |
* Pop the last entry from the stack |
* |
* @return mixed |
*/ |
public function pop() { |
if ($this->_count > 0) { |
return $this->_stack[--$this->_count]; |
} |
return NULL; |
} // function pop() |
|
/** |
* Return an entry from the stack without removing it |
* |
* @param integer $n number indicating how far back in the stack we want to look |
* @return mixed |
*/ |
public function last($n = 1) { |
if ($this->_count - $n < 0) { |
return NULL; |
} |
return $this->_stack[$this->_count - $n]; |
} // function last() |
|
/** |
* Clear the stack |
*/ |
function clear() { |
$this->_stack = array(); |
$this->_count = 0; |
} |
|
} // class PHPExcel_Calculation_Token_Stack |