1 <?php

     2 

     3 /*

     4  * This file is part of Twig.

     5  *

     6  * (c) 2009 Fabien Potencier

     7  *

     8  * For the full copyright and license information, please view the LICENSE

     9  * file that was distributed with this source code.

    10  */

    11 abstract class Twig_Extension implements Twig_ExtensionInterface

    12 {

    13     /**

    14      * Initializes the runtime environment.

    15      *

    16      * This is where you can load some file that contains filter functions for instance.

    17      *

    18      * @param Twig_Environment $environment The current Twig_Environment instance

    19      */

    20     public function initRuntime(Twig_Environment $environment)

    21     {

    22     }

    23 

    24     /**

    25      * Returns the token parser instances to add to the existing list.

    26      *

    27      * @return array An array of Twig_TokenParserInterface or Twig_TokenParserBrokerInterface instances

    28      */

    29     public function getTokenParsers()

    30     {

    31         return array();

    32     }

    33 

    34     /**

    35      * Returns the node visitor instances to add to the existing list.

    36      *

    37      * @return array An array of Twig_NodeVisitorInterface instances

    38      */

    39     public function getNodeVisitors()

    40     {

    41         return array();

    42     }

    43 

    44     /**

    45      * Returns a list of filters to add to the existing list.

    46      *

    47      * @return array An array of filters

    48      */

    49     public function getFilters()

    50     {

    51         return array();

    52     }

    53 

    54     /**

    55      * Returns a list of tests to add to the existing list.

    56      *

    57      * @return array An array of tests

    58      */

    59     public function getTests()

    60     {

    61         return array();

    62     }

    63 

    64     /**

    65      * Returns a list of functions to add to the existing list.

    66      *

    67      * @return array An array of functions

    68      */

    69     public function getFunctions()

    70     {

    71         return array();

    72     }

    73 

    74     /**

    75      * Returns a list of operators to add to the existing list.

    76      *

    77      * @return array An array of operators

    78      */

    79     public function getOperators()

    80     {

    81         return array();

    82     }

    83 

    84     /**

    85      * Returns a list of global functions to add to the existing list.

    86      *

    87      * @return array An array of global functions

    88      */

    89     public function getGlobals()

    90     {

    91         return array();

    92     }

    93 }