protected TwigNodeTrans::compileString(\Twig_Node $body)
Extracts the text and tokens for the "trans" tag.
Parameters
\Twig_Node $body: The node to compile.
Return value
array Returns an array containing the two following parameters:
- string $text The extracted text.
- array $tokens The extracted tokens as new \Twig_Node_Expression_Name instances.
File
- core/lib/Drupal/Core/Template/TwigNodeTrans.php, line 96
Class
- TwigNodeTrans
- A class that defines the Twig 'trans' tag for Drupal.
Namespace
Drupal\Core\Template
Code
protected function compileString(\Twig_Node $body) { if ($body instanceof \Twig_Node_Expression_Name || $body instanceof \Twig_Node_Expression_Constant || $body instanceof \Twig_Node_Expression_TempName) { return array($body, array()); } $tokens = array(); if (count($body)) { $text = ''; foreach ($body as $node) { if (get_class($node) === 'Twig_Node' && $node->getNode(0) instanceof \Twig_Node_SetTemp) { $node = $node->getNode(1); } if ($node instanceof \Twig_Node_Print) { $n = $node->getNode('expr'); while ($n instanceof \Twig_Node_Expression_Filter) { $n = $n->getNode('node'); } $args = $n; // Support TwigExtension->renderVar() function in chain. if ($args instanceof \Twig_Node_Expression_Function) { $args = $n->getNode('arguments')->getNode(0); } // Detect if a token implements one of the filters reserved for // modifying the prefix of a token. The default prefix used for // translations is "@". This escapes the printed token and makes them // safe for templates. // @see TwigExtension::getFilters() $argPrefix = '@'; while ($args instanceof \Twig_Node_Expression_Filter) { switch ($args->getNode('filter')->getAttribute('value')) { case 'placeholder': $argPrefix = '%'; break; } $args = $args->getNode('node'); } if ($args instanceof \Twig_Node_Expression_GetAttr) { $argName = array(); // Reuse the incoming expression. $expr = $args; // Assemble a valid argument name by walking through the expression. $argName[] = $args->getNode('attribute')->getAttribute('value'); while ($args->hasNode('node')) { $args = $args->getNode('node'); if ($args instanceof \Twig_Node_Expression_Name) { $argName[] = $args->getAttribute('name'); } else { $argName[] = $args->getNode('attribute')->getAttribute('value'); } } $argName = array_reverse($argName); $argName = implode('.', $argName); } else { $argName = $n->getAttribute('name'); if (!is_null($args)) { $argName = $args->getAttribute('name'); } $expr = new \Twig_Node_Expression_Name($argName, $n->getLine()); } $placeholder = sprintf('%s%s', $argPrefix, $argName); $text .= $placeholder; $expr->setAttribute('placeholder', $placeholder); $tokens[] = $expr; } else { $text .= $node->getAttribute('data'); } } } elseif (!$body->hasAttribute('data')) { throw new \Twig_Error_Syntax('{% trans %} tag cannot be empty'); } else { $text = $body->getAttribute('data'); } return array(new \Twig_Node(array(new \Twig_Node_Expression_Constant(trim($text), $body->getLine()))), $tokens); }
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