[TxMt] Re: Matching multiple lines in a grammar pattern

[Chris Rebert]

Sorry, I'm subscribed to both the ANTLR mailing list and this one and
got the two mixed up.
Apologies for the confusion!

- Chris

On Fri, Aug 8, 2008 at 8:59 PM, Nate Cavanaugh <nate at shift22.com> wrote:
>
> Hi Chris,
> Thanks for your prompt reply.
> I do have to apologize though, as I wasn't quite sure what you meant in your
> response.
>
> I've never heard of ANTLR, is it the engine that parses the grammars?
>
> But I will say that when I use the ^ and {n, m} in other patterns for the
> grammar, it does work, just not for multiple lines.
>
> The line you sent over doesn't work for me in the grammar section of the
> bundle, but perhaps you meant to paste it somewhere else?
>
> Here is what I have so far:
> patterns = (
>                {       name = 'invalid.extra-lines.js';
>                        comment = 'match all extraneous lines';
>                        begin = '^(\n)';
>                        end = '';
>                },
>
> Thanks again :)
>
>
> Chris Rebert wrote:
>>
>> From what I can grok of the ANTLR Book, I don't think either ^ as
>> start-of-line or {n,m} for specifying number of repetitions are
>> allowed.
>>
>> Have you tried:
>>
>> EXTRA_NEWLINES : '\n' '\n'+;
>>
>> - Chris
>>
>>
>> On Fri, Aug 8, 2008 at 5:53 PM, Nate Cavanaugh <nate at shift22.com> wrote:
>>>
>>> Hi all,
>>> I'm trying to add an invalid scope to a certain group of lines.
>>> Basically,
>>> the regex pattern I would like to match is this:
>>>
>>> ^(\n){2,}
>>>
>>> Which works fine in the Find dialog, but when trying to use it as a
>>> pattern,
>>> it doesn't work. I am guessing because of the way that the pattern
>>> matching
>>> works for grammars, but is there a way to match this?
>>>
>>> The logic is, I would like to match every line that has no content on it,
>>> but is part of a group of 2 or more extraneous lines.
>>> One \n is valid, but 2 or more is invalid.
>>>
>>> I've tried so many variations of trying to use captures, matching
>>> content,
>>> but it seems to be treating each line as it's own match independent of
>>> the
>>> previous or next ones.
>>>
>>> Anyone know how I might go about applying this?
>>>
>>> Any help is greatly appreciated.
>>>
>>> Thanks!
>>> --
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>>>
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