1 <?php

     2 /*

     3  *  $Id$

     4  *

     5  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

     6  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

     7  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

     8  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

     9  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

    10  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

    11  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

    12  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

    13  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    14  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    15  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    16  *

    17  * This software consists of voluntary contributions made by many individuals

    18  * and is licensed under the LGPL. For more information, see

    19  * <http://www.doctrine-project.org>.

    20  */

    21 

    22 namespace Doctrine\ORM\Query\AST;

    23 

    24 /**

    25  * Abstract class of an AST node

    26  *

    27  * @license http://www.opensource.org/licenses/lgpl-license.php LGPL

    28  * @link    www.doctrine-project.org

    29  * @since   2.0

    30  * @version $Revision: 3938 $

    31  * @author  Guilherme Blanco <guilhermeblanco@hotmail.com>

    32  * @author  Jonathan Wage <jonwage@gmail.com>

    33  * @author  Roman Borschel <roman@code-factory.org>

    34  */

    35 abstract class Node

    36 {

    37     /**

    38      * Double-dispatch method, supposed to dispatch back to the walker.

    39      * 

    40      * Implementation is not mandatory for all nodes.

    41      * 

    42      * @param $walker

    43      */

    44     public function dispatch($walker)

    45     {

    46         throw ASTException::noDispatchForNode($this);

    47     }

    48     

    49     /**

    50      * Dumps the AST Node into a string representation for information purpose only

    51      *

    52      * @return string

    53      */

    54     public function __toString()

    55     {

    56         return $this->dump($this);

    57     }

    58     

    59     public function dump($obj)

    60     {

    61         static $ident = 0;

    62         

    63         $str = '';

    64         

    65         if ($obj instanceof Node) {

    66             $str .= get_class($obj) . '(' . PHP_EOL;

    67             $props = get_object_vars($obj);

    68                 

    69             foreach ($props as $name => $prop) {

    70                 $ident += 4;

    71                 $str .= str_repeat(' ', $ident) . '"' . $name . '": ' 

    72                       . $this->dump($prop) . ',' . PHP_EOL;

    73                 $ident -= 4;

    74             }

    75                 

    76             $str .= str_repeat(' ', $ident) . ')';

    77         } else if (is_array($obj)) {

    78             $ident += 4;

    79             $str .= 'array(';

    80             $some = false;

    81                 

    82             foreach ($obj as $k => $v) {

    83                 $str .= PHP_EOL . str_repeat(' ', $ident) . '"' 

    84                       . $k . '" => ' . $this->dump($v) . ',';

    85                 $some = true;

    86             }

    87                 

    88             $ident -= 4;

    89             $str .= ($some ? PHP_EOL . str_repeat(' ', $ident) : '') . ')';

    90         } else if (is_object($obj)) {

    91             $str .= 'instanceof(' . get_class($obj) . ')';

    92         } else {

    93             $str .= var_export($obj, true);

    94         }

    95           

    96         return $str;

    97     }

    98 }