Hello,
[I'm redirecting this here from stats-rosuda-devel]
When parsing R code through R_parseVector and the code generates an
error (syntax error), is there a way to grab the error.
It looks like yyerror populates the buffer "R_ParseErrorMsg", but then
the variable is not part of the public api.
Would it be possible to add yet another entry point to the parser that
would basically wrap R_parseVector so that it would have an extra char*
argument that would bring back the error message if there is an error?
Romain
Simon Urbanek wrote:
On Jun 15, 2009, at 12:05 , Romain Francois wrote:
Hello,
In JRI, is there a way to get the error message that is generated by the
parser through rniParse
For example, if I have this :
long y = re.rniParse( "rnorm( 10 ))", 1 ) ;
this obviously generates a parse error, so y will be the same as
(R_NilValue) :
long null_id = re.rniEval( re.rniParse( "NULL", 1 ), 0 ) ;
I guess the underlying question is : "Is R_ParseErrorMsg exposed to
JRI".
AFAICT R_ParseErrorMsg and friends are not exposed by the R API - they
are not accessible outside, so they cannot be use by JRI. It would be
nice if there was a way of accessing that info, but R doesn't
currently support that.
Cheers,
Simon
The reason is I would like to bring back the message as part of an
exception generated when the code does not parse.
Romain
--
Romain Francois
Independent R Consultant
+33(0) 6 28 91 30 30
http://romainfrancois.blog.free.fr
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