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<?php
/*
* 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 MIT license. For more information, see
* <http://www.doctrine-project.org>.
*/
namespace Doctrine\ORM\Query\Expr;
/**
* Expression class for DQL math statements.
*
* @link www.doctrine-project.org
* @since 2.0
* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
* @author Jonathan Wage <jonwage@gmail.com>
* @author Roman Borschel <roman@code-factory.org>
*/
class Math
{
/**
* @var mixed
*/
protected $leftExpr;
/**
* @var string
*/
protected $operator;
/**
* @var mixed
*/
protected $rightExpr;
/**
* Creates a mathematical expression with the given arguments.
*
* @param mixed $leftExpr
* @param string $operator
* @param mixed $rightExpr
*/
public function __construct($leftExpr, $operator, $rightExpr)
{
$this->leftExpr = $leftExpr;
$this->operator = $operator;
$this->rightExpr = $rightExpr;
}
/**
* @return mixed
*/
public function getLeftExpr()
{
return $this->leftExpr;
}
/**
* @return string
*/
public function getOperator()
{
return $this->operator;
}
/**
* @return mixed
*/
public function getRightExpr()
{
return $this->rightExpr;
}
/**
* @return string
*/
public function __toString()
{
// Adjusting Left Expression
$leftExpr = (string) $this->leftExpr;
if ($this->leftExpr instanceof Math) {
$leftExpr = '(' . $leftExpr . ')';
}
// Adjusting Right Expression
$rightExpr = (string) $this->rightExpr;
if ($this->rightExpr instanceof Math) {
$rightExpr = '(' . $rightExpr . ')';
}
return $leftExpr . ' ' . $this->operator . ' ' . $rightExpr;
}
}
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