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<?php
namespace Drupal\Component\Utility;
/**
* Wraps __toString in a trait to avoid some fatals.
*/
trait ToStringTrait {
/**
* Implements the magic __toString() method.
*/
public function __toString() {
try {
return (string) $this->render();
}
catch (\Exception $e) {
// User errors in __toString() methods are considered fatal in the Drupal
// error handler.
trigger_error(get_class($e) . ' thrown while calling __toString on a ' . get_class($this) . ' object in ' . $e->getFile() . ' on line ' . $e->getLine() . ': ' . $e->getMessage(), E_USER_ERROR);
// In case we are using another error handler that did not fatal on the
// E_USER_ERROR, we terminate execution. However, for test purposes allow
// a return value.
return $this->_die();
}
}
/**
* For test purposes, wrap die() in an overridable method.
*/
protected function _die() {
die();
}
/**
* Renders the object as a string.
*
* @return string|object
* The rendered string or an object implementing __toString().
*/
abstract public function render();
}