src/Language/Parser.php
private function parseDirectiveLocations()
    {
        // Optional leading pipe
        $this->skip(Token::PIPE);
        $locations = [];
        do {
            $locations[] = $this->parseDirectiveLocation();
        } while ($this->skip(Token::PIPE));

        return $locations;
    }
private function parseDirectiveLocations()
    {
        // Optional leading pipe
        $this->skip(Token::PIPE);
        $locations = [];
        do {
            $locations[] = $this->parseDirectiveLocation();
        } while ($this->skip(Token::PIPE));

        return $locations;
    }
@return NameNode[]

@throws SyntaxError