Filter.php

1. 9.x drupal/core/vendor/twig/twig/lib/Twig/Filter.php
2. 9.x drupal/core/vendor/twig/twig/lib/Twig/TokenParser/Filter.php
3. 9.x drupal/core/vendor/twig/twig/lib/Twig/Node/Expression/Filter.php

<?php

/*
 * This file is part of Twig.
 *
 * (c) 2009 Fabien Potencier
 * (c) 2009 Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
class Twig_Node_Expression_Filter extends Twig_Node_Expression {
  public function __construct(Twig_NodeInterface $node, Twig_Node_Expression_Constant $filterName, Twig_NodeInterface $arguments, $lineno, $tag = null) {
    parent::__construct(array(
      'node' => $node,
      'filter' => $filterName,
      'arguments' => $arguments,
    ), array(), $lineno, $tag);
  }
  public function compile(Twig_Compiler $compiler) {
    $name = $this
      ->getNode('filter')
      ->getAttribute('value');
    if (false === ($filter = $compiler
      ->getEnvironment()
      ->getFilter($name))) {
      $message = sprintf('The filter "%s" does not exist', $name);
      if ($alternatives = $compiler
        ->getEnvironment()
        ->computeAlternatives($name, array_keys($compiler
        ->getEnvironment()
        ->getFilters()))) {
        $message = sprintf('%s. Did you mean "%s"', $message, implode('", "', $alternatives));
      }
      throw new Twig_Error_Syntax($message, $this
        ->getLine());
    }
    $this
      ->compileFilter($compiler, $filter);
  }
  protected function compileFilter(Twig_Compiler $compiler, Twig_FilterInterface $filter) {
    $compiler
      ->raw($filter
      ->compile() . '(')
      ->raw($filter
      ->needsEnvironment() ? '$this->env, ' : '')
      ->raw($filter
      ->needsContext() ? '$context, ' : '');
    foreach ($filter
      ->getArguments() as $argument) {
      $compiler
        ->string($argument)
        ->raw(', ');
    }
    $compiler
      ->subcompile($this
      ->getNode('node'));
    foreach ($this
      ->getNode('arguments') as $node) {
      $compiler
        ->raw(', ')
        ->subcompile($node);
    }
    $compiler
      ->raw(')');
  }

}