Re: [lojban] zoi-open, zoi-word, zoi-close MORPHOLOGY INTERFACE

[Robin Lee Powell <rlpowell@digitalkingdom.org>]

On Tue, Nov 23, 2010 at 12:29:47PM -0700, .alyn.post. wrote:
> In the lojban.peg.txt file:
> 
>   http://www.digitalkingdom.org/~rlpowell/hobbies/lojban/grammar/lojban.peg.txt
> 
> There is a section on MORPHOLOGY INTERFACE.  The rules  zoi-open,
> zoi-word, and zoi-close have embedded code in them:
> 
> zoi-open <- any-word-pre inner-word &{ myAssign( new String(innerWordSEP2.toString()) ) } close-paren
> 
> Is that intentional?

Yes.  zoi is 100% context-sensitive; it cannot be processed with
anything short of a true CSG (
http://en.wikipedia.org/wiki/Context-sensitive_grammar ) as far as I
can tell.

As such, it needs code to work, in CFG or PEG.

> I don't really understand what this section is doing, and whether it
> is glue specific to RATS! or whether it is glue required for any
> parser, and this is a RATS! implementation of it. 

The latter.  The part you quoted means "store the word after zoi".
The zoi-close bit means "only match if the stored word matches".
This is how zoi works.

> What is going on with stuff like this?:
> 
> NORATS COI <- COI-word-pre inner-word close-paren close-paren
> NORATS COI-word-pre <- " CMAVO=(  COI=( "

The morphology outputs stuff like this:

text=(  BRIVLA=(  gismu=( klama )  )  spaces=(   )  )

The rest of the grammar processes that.

A bit of a grotesque hack, really; I was trying to give xorxes
freedom to mess with the morphology as a seperate construct, and I
didn't know about JSON or YAML at the time.

-Robin

-- 
http://singinst.org/ :  Our last, best hope for a fantastic future.
Lojban (http://www.lojban.org/): The language in which "this parrot
is dead" is "ti poi spitaki cu morsi", but "this sentence is false"
is "na nei".   My personal page: http://www.digitalkingdom.org/rlp/

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