import a._regex


class Regex {
    [opaque]

    new(pattern) = {
        if type(pattern) is Regex {
            pattern
        } else {
            new(_regex::new_regex(pattern))
        }
    }

    def find(self, text, start=nil, end=nil) = {
        [start, end] = _regex::regex_find(self.opaque, text, start, end)
        Match(text, start, end)
    }

    def replace(self, text, repl, start=nil, end=nil, limit=0) = {
        _regex::regex_replace(self.opaque, text, repl, start, end, limit)
    }
}

class Match {
    [_original_string, _start, _end]
    new(string, start, end) = new(string, start, end)
    def str(self) = self._original_string.slice(self._start, self._end)
    def __repr(self) = 'Match(%r)' % [self.str()]
    def start(self) = self._start
    def end(self) = self._end
}