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<?php
/*
* $Id: NotCondition.php 526 2009-08-11 12:11:17Z mrook $
*
* 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.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information please see
* <http://phing.info>.
*/
require_once 'phing/tasks/system/condition/ConditionBase.php';
/**
* <not> condition.
*
* Evaluates to true if the single condition nested into it is false
* and vice versa.
*
* @author Andreas Aderhold <andi@binarycloud.com>
* @copyright © 2001,2002 THYRELL. All rights reserved
* @version $Revision: 526 $ $Date: 2009-08-11 14:11:17 +0200 (Tue, 11 Aug 2009) $
* @access public
* @package phing.tasks.system.condition
*/
class NotCondition extends ConditionBase implements Condition {
function evaluate() {
if ($this->countConditions() > 1) {
throw new BuildException("You must not nest more than one condition into <not>");
}
if ($this->countConditions() < 1) {
throw new BuildException("You must nest a condition into <not>");
}
$conds = $this->getIterator();
return !$conds->current()->evaluate();
}
}
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