function TwigEnvironment::compileSource
Same name in other branches
- 9 core/lib/Drupal/Core/Template/TwigEnvironment.php \Drupal\Core\Template\TwigEnvironment::compileSource()
- 11.x core/lib/Drupal/Core/Template/TwigEnvironment.php \Drupal\Core\Template\TwigEnvironment::compileSource()
File
-
core/
lib/ Drupal/ Core/ Template/ TwigEnvironment.php, line 107
Class
- TwigEnvironment
- A class that defines a Twig environment for Drupal.
Namespace
Drupal\Core\TemplateCode
public function compileSource(Source $source) : string {
// Note: always use \Drupal\Core\Serialization\Yaml here instead of the
// "serializer.yaml" service. This allows the core serializer to utilize
// core related functionality which isn't available as the standalone
// component based serializer.
$frontMatter = FrontMatter::create($source->getCode(), Yaml::class);
// Reconstruct the source if there is front matter data detected. Prepend
// the source with {% line \d+ %} to inform Twig that the source code
// actually starts on a different line past the front matter data. This is
// particularly useful when used in error reporting.
try {
if (($line = $frontMatter->getLine()) > 1) {
$content = "{% line {$line} %}" . $frontMatter->getContent();
$source = new Source($content, $source->getName(), $source->getPath());
}
} catch (FrontMatterParseException $exception) {
// Convert parse exception into a syntax exception for Twig and append
// the path/name of the source to help further identify where it occurred.
$message = sprintf($exception->getMessage() . ' in %s', $source->getPath() ?: $source->getName());
throw new SyntaxError($message, $exception->getSourceLine(), $source, $exception);
}
return parent::compileSource($source);
}
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