Python, as you probably know, has the feature for matching
subexpressions in a regular expression, like this:
>>> m = re.search(r'((\w+):(.*))', 'host:/foo/bar/baz')
>>> m.groups()
('host:/foo/bar/baz', 'host', '/foo/bar/baz')
or:
>>> m = re.search(r'(?P<arg>(?P<host>\w+):(?P<path>.*))',
'host:/foo/bar/baz')
>>> m.groups('host')
'host'
>>> m.groups('path')
'/foo/bar/baz'
>>> m.groups('arg')
'host:/foo/bar/baz'
I don't see an easy way on how to do this. reglex seems like it could
work, or using the glr parser, but that seems a little heavyweight. How
difficult would it be to support something like this?
regmatch "host:/foo/bar/baz" with
| ((alphanumeric+ as ?host) ":" (_* as ?path)) as ?arg => Some (arg,
host, port)
| _ => None
endregmatch;
-e
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