Provide support of the cast to uchar

[sergeyklay]

calling zephir_parse_file with content as follows

    public function extract()
    {
        char ch1;
        string name = "peter";

        let ch1 = name[1];

        return (uchar)ch1;
    }

will print to stderr

unknown type?

[dreamsxin]

Do you think it will be easier to convert uchar/char to zend_string/zval type?

[sergeyklay]

I don't think so, but it seems we need to introduce this ability.