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<?php
/**
* PHP_ParserGenerator, a php 5 parser generator.
*
* This is a direct port of the Lemon parser generator, found at
* {@link http://www.hwaci.com/sw/lemon/}
*
* PHP version 5
*
* LICENSE:
*
* Copyright (c) 2006, Gregory Beaver <cellog@php.net>
* 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 the PHP_ParserGenerator nor the names of its
* 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_ParserGenerator
* @author Gregory Beaver <cellog@php.net>
* @copyright 2006 Gregory Beaver
* @license http://www.opensource.org/licenses/bsd-license.php New BSD License
* @version CVS: $Id: PropagationLink.php,v 1.1 2006/07/18 00:53:10 cellog Exp $
* @since File available since Release 0.1.0
*/
/**
* A followset propagation link indicates that the contents of one
* configuration followset should be propagated to another whenever
* the first changes.
*
* @package PHP_ParserGenerator
* @author Gregory Beaver <cellog@php.net>
* @copyright 2006 Gregory Beaver
* @license http://www.opensource.org/licenses/bsd-license.php New BSD License
* @version 0.1.5
* @since Class available since Release 0.1.0
*/
class PHP_ParserGenerator_PropagationLink
{
/**
* The configuration that defines this propagation link
* @var PHP_ParserGenerator_Config
*/
public $cfp;
/**
* The next propagation link
* @var PHP_ParserGenerator_PropagationLink|0
*/
public $next = 0;
/**
* Add a propagation link to the current list
*
* This prepends the configuration passed in to the first parameter
* which is either 0 or a PHP_ParserGenerator_PropagationLink defining
* an existing list.
* @param PHP_ParserGenerator_PropagationLink|null
* @param PHP_ParserGenerator_Config
*/
public static function Plink_add(&$plpp, PHP_ParserGenerator_Config $cfp)
{
$new = new PHP_ParserGenerator_PropagationLink;
$new->next = $plpp;
$plpp = $new;
$new->cfp = $cfp;
}
/**
* Transfer every propagation link on the list "from" to the list "to"
*/
public static function Plink_copy(PHP_ParserGenerator_PropagationLink &$to,
PHP_ParserGenerator_PropagationLink $from)
{
while ($from) {
$nextpl = $from->next;
$from->next = $to;
$to = $from;
$from = $nextpl;
}
}
/**
* Delete every propagation link on the list
* @param PHP_ParserGenerator_PropagationLink|0
*/
public static function Plink_delete($plp)
{
while ($plp) {
$nextpl = $plp->next;
$plp->next = 0;
$plp = $nextpl;
}
}
}
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