/usr/share/php/PHP/Depend/Parser/TokenStack.php is in pdepend 1.1.4-1.
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/**
* This file is part of PHP_Depend.
*
* PHP Version 5
*
* Copyright (c) 2008-2012, Manuel Pichler <mapi@pdepend.org>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of Manuel Pichler nor the names of his
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* @category PHP
* @package PHP_Depend
* @subpackage Parser
* @author Manuel Pichler <mapi@pdepend.org>
* @copyright 2008-2012 Manuel Pichler. All rights reserved.
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
* @version SVN: $Id$
* @link http://www.pdepend.org/
* @since 0.9.6
*/
/**
* This class provides a scoped collection for {@PHP_Depend_Token} objects.
*
* @category PHP
* @package PHP_Depend
* @subpackage Parser
* @author Manuel Pichler <mapi@pdepend.org>
* @copyright 2008-2012 Manuel Pichler. All rights reserved.
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
* @version Release: 1.1.4
* @link http://www.pdepend.org/
* @since 0.9.6
*/
class PHP_Depend_Parser_TokenStack
{
/**
* The actual token scope.
*
* @var PHP_Depend_Token[]
*/
private $tokens = array();
/**
* Stack with token scopes.
*
* @var PHP_Depend_Token[][]
*/
private $stack = array();
/**
* The current stack offset.
*
* @var integer
*/
private $offset = 0;
/**
* This method will push a new token scope onto the stack,
*
* @return void
*/
public function push()
{
$this->stack[$this->offset++] = $this->tokens;
$this->tokens = array();
}
/**
* This method will pop the top token scope from the stack and return an
* array with all collected tokens. Additionally this method will add all
* tokens of the removed scope onto the next token scope.
*
* @return PHP_Depend_Token[]
*/
public function pop()
{
$tokens = $this->tokens;
$this->tokens = $this->stack[--$this->offset];
unset($this->stack[$this->offset]);
foreach ($tokens as $token) {
$this->tokens[] = $token;
}
return $tokens;
}
/**
* This method will add a new token to the currently active token scope.
*
* @param PHP_Depend_Token $token The token to add.
*
* @return PHP_Depend_Token
*/
public function add(PHP_Depend_Token $token)
{
return ($this->tokens[] = $token);
}
}
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