class TwigTransTokenParser in Zircon Profile 8
Same name and namespace in other branches
- 8.0 core/lib/Drupal/Core/Template/TwigTransTokenParser.php \Drupal\Core\Template\TwigTransTokenParser
A class that defines the Twig 'trans' token parser for Drupal.
The token parser converts a token stream created from template source code into an Abstract Syntax Tree (AST). The AST will later be compiled into PHP code usable for runtime execution of the template.
Hierarchy
- class \Drupal\Core\Template\TwigTransTokenParser extends \Drupal\Core\Template\Twig_TokenParser
Expanded class hierarchy of TwigTransTokenParser
See also
File
- core/
lib/ Drupal/ Core/ Template/ TwigTransTokenParser.php, line 22 - Contains \Drupal\Core\Template\TwigTransTokenParser.
Namespace
Drupal\Core\TemplateView source
class TwigTransTokenParser extends \Twig_TokenParser {
/**
* {@inheritdoc}
*/
public function parse(\Twig_Token $token) {
$lineno = $token
->getLine();
$stream = $this->parser
->getStream();
$body = NULL;
$options = NULL;
$count = NULL;
$plural = NULL;
if (!$stream
->test(\Twig_Token::BLOCK_END_TYPE) && $stream
->test(\Twig_Token::STRING_TYPE)) {
$body = $this->parser
->getExpressionParser()
->parseExpression();
}
if (!$stream
->test(\Twig_Token::BLOCK_END_TYPE) && $stream
->test(\Twig_Token::NAME_TYPE, 'with')) {
$stream
->next();
$options = $this->parser
->getExpressionParser()
->parseExpression();
}
if (!$body) {
$stream
->expect(\Twig_Token::BLOCK_END_TYPE);
$body = $this->parser
->subparse(array(
$this,
'decideForFork',
));
if ('plural' === $stream
->next()
->getValue()) {
$count = $this->parser
->getExpressionParser()
->parseExpression();
$stream
->expect(\Twig_Token::BLOCK_END_TYPE);
$plural = $this->parser
->subparse(array(
$this,
'decideForEnd',
), TRUE);
}
}
$stream
->expect(\Twig_Token::BLOCK_END_TYPE);
$this
->checkTransString($body, $lineno);
$node = new TwigNodeTrans($body, $plural, $count, $options, $lineno, $this
->getTag());
return $node;
}
/**
* Detect a 'plural' switch or the end of a 'trans' tag.
*/
public function decideForFork($token) {
return $token
->test(array(
'plural',
'endtrans',
));
}
/**
* Detect the end of a 'trans' tag.
*/
public function decideForEnd($token) {
return $token
->test('endtrans');
}
/**
* {@inheritdoc}
*/
public function getTag() {
return 'trans';
}
/**
* Ensure that any nodes that are parsed are only of allowed types.
*
* @param \Twig_Node $body
* The expression to check.
* @param integer $lineno
* The source line.
*
* @throws \Twig_Error_Syntax
*/
protected function checkTransString(\Twig_Node $body, $lineno) {
foreach ($body as $node) {
if ($node instanceof \Twig_Node_Text || $node instanceof \Twig_Node_Print && $node
->getNode('expr') instanceof \Twig_Node_Expression_Name || $node instanceof \Twig_Node_Print && $node
->getNode('expr') instanceof \Twig_Node_Expression_GetAttr || $node instanceof \Twig_Node_Print && $node
->getNode('expr') instanceof \Twig_Node_Expression_Filter) {
continue;
}
throw new \Twig_Error_Syntax(sprintf('The text to be translated with "trans" can only contain references to simple variables'), $lineno);
}
}
}
Members
Name | Modifiers | Type | Description | Overrides |
---|---|---|---|---|
TwigTransTokenParser:: |
protected | function | Ensure that any nodes that are parsed are only of allowed types. | |
TwigTransTokenParser:: |
public | function | Detect the end of a 'trans' tag. | |
TwigTransTokenParser:: |
public | function | Detect a 'plural' switch or the end of a 'trans' tag. | |
TwigTransTokenParser:: |
public | function | ||
TwigTransTokenParser:: |
public | function |