Parsing code with newlines

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.

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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Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
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