[erlang-questions] What is the best way to parse complex erlang terms in port drivers?

Zhemzhitsky Sergey <>
Thu Jun 7 10:04:39 CEST 2012


Hello Michael,

Thanks a lot.

I have understood that in case of eterms it will be necessary to traverse the parsed structure somehow to transform it into the target c-structure, so ei interface seems more natural to use as I will be creating the c-structure during parsing.

Regards,
Sergey

-----Original Message-----
From: Michael Truog [mailto:] 
Sent: Thursday, June 07, 2012 11:30 AM
To: Zhemzhitsky Sergey
Cc: 'Richard O'Keefe'; 
Subject: Re: [erlang-questions] What is the best way to parse complex erlang terms in port drivers?

On 06/07/2012 12:19 AM, Zhemzhitsky Sergey wrote:
>>> Why was it hard to see in the documentation?
> As I'm kinda a newbie at erlang I understand your indignation. I supposed there should be some best practices and of cause I don't know them for now.
>
> The question was asked first of all because there are a lot of samples which use different approaches to parse erlang terms and I'd like to know the best one from the point of view of source code maintainability and simplicity. 
> I'm also interested in not only mentioned approaches but in the alternative ones.
It seems like the eterm interface is the older/slower interface, and the ei interface is the newer/faster interface (where you have better control over memory usage).  That is just based on experience, and is unlikely to be found in the documentation.

- Michael

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