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Parse token+position with parser combinators
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Simon Schäfer  
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 More options Sep 12 2012, 6:17 pm
From: Simon Schäfer <m...@antoras.de>
Date: Thu, 13 Sep 2012 00:17:40 +0200
Local: Wed, Sep 12 2012 6:17 pm
Subject: Parse token+position with parser combinators
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I want to know if it is possible to parse tokens + their position +
their length with Scalas parser combinators.

I tried to use JavaTokenParsers but they seem not be the best way to
achieve what I want. My current progress: https://gist.github.com/3709623

Main problems are the ugly notation of the tokens and wrong
determination of positions (I can't find out a way to get the length of
identifiers without adding count of whitespace).

StandardTokenParsers are better to parse tokens, I assume, but they
neither offer a simple way to return the position of a token.

Need I to build may own position based token parser? If yes, does
someone know some projects/examples which already tried to do the same?


 
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Luke Vilnis  
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 More options Sep 12 2012, 6:59 pm
From: Luke Vilnis <lvil...@gmail.com>
Date: Wed, 12 Sep 2012 18:59:15 -0400
Local: Wed, Sep 12 2012 6:59 pm
Subject: Re: [scala-user] Parse token+position with parser combinators
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Could you accomplish what you want by copying RegexParsers and modifying to
include the (start, end) info from the regex match groups?


 
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Simon Schäfer  
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 More options Sep 12 2012, 8:18 pm
From: Simon Schäfer <m...@antoras.de>
Date: Thu, 13 Sep 2012 02:18:24 +0200
Local: Wed, Sep 12 2012 8:18 pm
Subject: Re: [scala-user] Parse token+position with parser combinators
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Nice tip! I didn't think at that. I got it to work:
https://gist.github.com/3709623

Not quite perfect. Probably I need to copy the contents of
RegexParsers/JavaTokenParsers and edit them with my changes but when
that will be the only problem I come to, that's a good solution. Thanks!

On Thu 13 Sep 2012 12:59:15 AM CEST, Luke Vilnis wrote:


 
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