1 files changed, 73 insertions, 0 deletions
diff --git a/admin/survey/excel/PHPExcel/Calculation/Token/Stack.php b/admin/survey/excel/PHPExcel/Calculation/Token/Stack.php
new file mode 100644
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--- /dev/null
+++ b/admin/survey/excel/PHPExcel/Calculation/Token/Stack.php
@@ -0,0 +1,73 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2012 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 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version	1.7.8, 2012-10-12
+ */
+
+
+class PHPExcel_Calculation_Token_Stack {
+
+	private $_stack = array();
+	private $_count = 0;
+
+
+	public function count() {
+		return $this->_count;
+	}	//	function count()
+
+
+	public function push($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'] = $localeFunction;
+			}
+		}
+	}	//	function push()
+
+
+	public function pop() {
+		if ($this->_count > 0) {
+			return $this->_stack[--$this->_count];
+		}
+		return null;
+	}	//	function pop()
+
+
+	public function last($n=1) {
+		if ($this->_count-$n < 0) {
+			return null;
+		}
+		return $this->_stack[$this->_count-$n];
+	}	//	function last()
+
+
+	function __construct() {
+	}
+
+}	//	class PHPExcel_Calculation_Token_Stack