Chris@0: <?php
Chris@0: /*
Chris@0:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
Chris@0:  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
Chris@0:  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
Chris@0:  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
Chris@0:  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
Chris@0:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
Chris@0:  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
Chris@0:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
Chris@0:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
Chris@0:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
Chris@0:  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Chris@0:  *
Chris@0:  * This software consists of voluntary contributions made by many individuals
Chris@0:  * and is licensed under the MIT license. For more information, see
Chris@0:  * <http://www.doctrine-project.org>.
Chris@0:  */
Chris@0: 
Chris@0: namespace Doctrine\Common\Collections\Expr;
Chris@0: 
Chris@0: /**
Chris@0:  * Expression of Expressions combined by AND or OR operation.
Chris@0:  *
Chris@0:  * @author Benjamin Eberlei <kontakt@beberlei.de>
Chris@0:  * @since  2.3
Chris@0:  */
Chris@0: class CompositeExpression implements Expression
Chris@0: {
Chris@0:     const TYPE_AND = 'AND';
Chris@0:     const TYPE_OR = 'OR';
Chris@0: 
Chris@0:     /**
Chris@0:      * @var string
Chris@0:      */
Chris@0:     private $type;
Chris@0: 
Chris@0:     /**
Chris@0:      * @var Expression[]
Chris@0:      */
Chris@0:     private $expressions = array();
Chris@0: 
Chris@0:     /**
Chris@0:      * @param string $type
Chris@0:      * @param array  $expressions
Chris@0:      *
Chris@0:      * @throws \RuntimeException
Chris@0:      */
Chris@0:     public function __construct($type, array $expressions)
Chris@0:     {
Chris@0:         $this->type = $type;
Chris@0: 
Chris@0:         foreach ($expressions as $expr) {
Chris@0:             if ($expr instanceof Value) {
Chris@0:                 throw new \RuntimeException("Values are not supported expressions as children of and/or expressions.");
Chris@0:             }
Chris@0:             if ( ! ($expr instanceof Expression)) {
Chris@0:                 throw new \RuntimeException("No expression given to CompositeExpression.");
Chris@0:             }
Chris@0: 
Chris@0:             $this->expressions[] = $expr;
Chris@0:         }
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Returns the list of expressions nested in this composite.
Chris@0:      *
Chris@0:      * @return Expression[]
Chris@0:      */
Chris@0:     public function getExpressionList()
Chris@0:     {
Chris@0:         return $this->expressions;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getType()
Chris@0:     {
Chris@0:         return $this->type;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritDoc}
Chris@0:      */
Chris@0:     public function visit(ExpressionVisitor $visitor)
Chris@0:     {
Chris@0:         return $visitor->walkCompositeExpression($this);
Chris@0:     }
Chris@0: }