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Re: SMIE examples or guides


From: Björn Lindqvist
Subject: Re: SMIE examples or guides
Date: Wed, 29 Jun 2016 18:48:32 +0200

I got it to work almost by experimenting with your suggestions. But it
appears to do some kind of automatic aligning I don't want:

HELLO   one
        two
        three
    BYE

That should instead have been:

HELLO   one
    two
    three
    BYE

My language is not newline-significant.


2016-06-29 9:37 GMT+02:00 Stefan Monnier <address@hidden>:
>>     HELLO
>>         HELLO foo BYE
>>             HELLO
>>                 bla
>>                     net
>>                     neat
>>             BYE
>>             text more
>>             more
>>     BYE
>
> That's expected: the third HELLO...BYE is indented as an argument of
> the first.  Similarly to:
>
>      (table->method)
>          (arg1,
>           arg2
>          )
>
> [ Read the above, thinking that "(" is like HELLO and ")" is like
>   "BYE".  ]
>
> Similarly, "net" and "neat" are treated as arguments to "bla".
>
> A quick fix to that part would be to add an indentation rule along the
> lines of
>
>      (`(:elem . arg) 0)
>
> or alternatively
>
>      (`(:list-intro . ,_) t)
>
> Tho, if your language makes newlines significant (i.e. "bla\nnet" is not
> equivalent to "bla net"), then you might be better off changing the
> tokenizer (by providing appropriate :forward-token and :backward-token
> arguments to `smie-setup') so as to return an actual token for every
> newline encountered, after which you can add corresponding rules to
> the grammar.
>
>>     HELLO
>>         bla
>>         net
>>         neat
>>         BYE
>
> To get the BYE indented this way, a quick-fix could be to add a rule
> like
>
>      (`(:before . "BYE") 4)
>
>
> -- Stefan
>
>


-- 
mvh/best regards Björn Lindqvist



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