Re: Basic question about creating a parser

On 04/29/17 18:03 PM, Eric Ludlam wrote:

[...]

> Hi Eric,
>
> Sorry for a slow response.  Kids are pretty time consuming.

No worries, I appreciate the pointers!

> The semantic tools is a great way to build a parser for a language.  I
> recommend the 'wisent' parser generator, as it is faster than the
> original bovine version.  The wisent manual has some nice examples in
> it for building a language.  The goal of any of these parsers is to
> create a 'tag' which is then used for code analysis.  If you want to
> create a parser with some other struture output, that is also
> possible.  The example semantic/wisent/calc.wy and
> semantic/wisent/calc.el shows a calculator parser that does the math
> instead of generating tags, so it might be a nice example.

Okay, thanks. The calc.el/wy example is very helpful. I'd assumed that
wisent would be overkill for my use-case, but faster would certainly be
better. I hope I might be able to use this to, for example, reasonably
quickly parse a file of several hundred vCard contacts into EIEIO object
instances. The calc.wy file indicates that I could make object creation
part of the actual parsing process (the way that calc.wy does the math
as it parses), so that's encouraging.

Thanks again,
Eric

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