This adds nothing to your previous post: please don't be annoying and post
almost identical messages.
I strongly suspect you mean 'parse error' and 'how can I parse R code',
but we don't know what the example was and what the error message was.
Nor do we know what you are doing with this fragement of C code (and
returnng an unprotected SEXP via a (void *) cast is a recipe for tears).
parse(text=) uses R_ParseVector, and that works for 'code that includes
comments and newlines', so please check out the internal code used (in
src/main/gram.c).
If you study the posting guide you should be able to formulate a posting
that people can actually help you with.
On Mon, 4 Aug 2008, Peter Jaeger wrote:
Dear List,
When I try to parse code containing newline characters with R_ParseVector, I
get a compilation error. How can I compile code that includes comments and
newlines?
I am using the following:
void* my_compile(char *code)
{
SEXP cmdSexp, cmdExpr = R_NilValue;
ParseStatus status;
PROTECT (cmdSexp = allocVector (STRSXP, 1));
SET_STRING_ELT (cmdSexp, 0, mkChar (code));
PROTECT (cmdExpr = R_ParseVector (cmdSexp,-1,&status,
R_NilValue));
UNPROTECT_PTR (cmdSexp);
if (status != PARSE_OK) {
return (void*)0;
} else {
return (void*)cmdExpr;
}
}
Regards,
Peter
[[alternative HTML version deleted]]
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