presto-cli/src/main/java/io/prestosql/cli/InputHighlighter.java/InputHighlighter/isNumber
class InputHighlighter:    private static boolean isNumber(int type)
    {
        return (type == SqlBaseLexer.INTEGER_VALUE) ||
                (type == SqlBaseLexer.DOUBLE_VALUE) ||
                (type == SqlBaseLexer.DECIMAL_VALUE);
    }