Recent changes to support-requests

can't define required grammar, please help

Nahid — Tue, 12 Oct 2010 11:29:11 -0000

Hi,
I want to validate Ontex syntax which is used to write OWL axiom. Say, I have following 2 axioms:

1. Address(CIAO2010, \string{Via Sommarive, 18 - 38123 Povo di Trento (ITALY)})
2. \oalldiff{ CIAO2010, ESWC2010, IWC2010}

And my parser definition is:

'[A-Za-z0-9\_\#\&\;\+\:\-]+' NAME
'\{([^\}])*\}' ANYTHING_IN_CURLY
'\\integer|\\string|\\boolean|\\float|\\dateTime' DATATYPES
"\\oalldiff" ALLDIFFERENT

datatypeassertion: NAME '(' NAME , DATATYPES ANYTHING_IN_CURLY ')'
;

objectSequenceIdentity: ALLDIFFERENT '\{' NAME oneOrMoreNames '\}'
;

oneOrMoreNames: ',' NAME | ',' NAME oneOrMoreNames
;

But it doesn't work.
Because the pattern for '\{([^\}])*\}' ANYTHING_IN_CURLY also matched with ALLDIFFERENT '\{' NAME oneOrMoreNames '\}' ({ CIAO2010, ESWC2010, IWC2010}).

Is this problem clear?
How can I define the parser to full-fill my need?

Please help me.
thanks
-Nahid

xpl.par generates a parser that's hardwired for Rhino

Attila Szegedi — Sat, 01 May 2010 17:22:31 -0000

xpl.par generates a parser that's hardwired for Rhino. I had to replace read_string() with read_line() and read_file() with file_read() for it to work with v8sh.

Can you please help me with this grammar/bug

Tiest Vilee — Sun, 28 Sep 2008 16:58:28 -0000

I've been bashing my head away against this problem for a while now, and would really appreciate it if you could tell me where I've gone wrong, or if you think it might be a bug in the parser.

Please find attached a grammar, and an example file. I am trying to do a Python style DSL, but function calls are normal, bracketed, recursive structures. This all seems to work, except for the simplest case.

If I try

$something
$myfunc\(&lt;&lt;&lt;hello&gt;&gt;&gt;, $something-&gt;attr\)
$myfunc\(&lt;&lt;&lt;hello&gt;&gt;&gt;, $something-&gt;attr\($somethingelse-&gt;whatever\)\)
$myfunc\(&lt;&lt;&lt;hello&gt;&gt;&gt;, $something\)
$myfunc\(&lt;&lt;&lt;hello&gt;&gt;&gt;, $something\(\)\) \#id

then the first three lines work, as they should. but the last two lines do not. I have worked out that this is because of the $something variable not having a 'chain', but that works fine when the variable is at the top level.

I would really appreciate some advice on this matter. I haven't been able to deduce what is happening when I put the traces on because there is so much logging going on.

Cheers,
Tiest