public function parse(Parser $parser)
{
$parser->Match(Lexer::T_IDENTIFIER);
$parser->Match(Lexer::T_OPEN_PARENTHESIS);
$this->dateExpression = $parser->ArithmeticExpression();
$parser->Match(Lexer::T_COMMA);
$this->formatChar = $parser->ArithmeticExpression();
$parser->Match(Lexer::T_CLOSE_PARENTHESIS);
}
