PhpParser\PrettyPrinter\Standard::pScalar_String PHP Метод

    protected function pScalar_String(Scalar\String_ $node) {
        $kind = $node->getAttribute('kind', Scalar\String_::KIND_SINGLE_QUOTED);
        switch ($kind) {
            case Scalar\String_::KIND_NOWDOC:
                $label = $node->getAttribute('docLabel');
                if ($label && !$this->containsEndLabel($node->value, $label)) {
                    if ($node->value === '') {
                        return $this->pNoIndent("<<<'$label'\n$label") . $this->docStringEndToken;
                    }

                    return $this->pNoIndent("<<<'$label'\n$node->value\n$label")
                         . $this->docStringEndToken;
                }
                /* break missing intentionally */
            case Scalar\String_::KIND_SINGLE_QUOTED:
                return '\'' . $this->pNoIndent(addcslashes($node->value, '\'\\')) . '\'';
            case Scalar\String_::KIND_HEREDOC:
                $label = $node->getAttribute('docLabel');
                if ($label && !$this->containsEndLabel($node->value, $label)) {
                    if ($node->value === '') {
                        return $this->pNoIndent("<<<$label\n$label") . $this->docStringEndToken;
                    }

                    $escaped = $this->escapeString($node->value, null);
                    return $this->pNoIndent("<<<$label\n" . $escaped ."\n$label")
                         . $this->docStringEndToken;
                }
            /* break missing intentionally */
            case Scalar\String_::KIND_DOUBLE_QUOTED:
                return '"' . $this->escapeString($node->value, '"') . '"';
        }
        throw new \Exception('Invalid string kind');
    }

 public function pScalar_String(Scalar\String $node)
 {
     if ($node->obfuscated) {
         return $this->pNoIndent(addcslashes($node->value, '\'\\'));
     }
     return parent::pScalar_String($node);
 }