SEXP dataframe_to_list(SEXP _source, SEXP _nrow, SEXP _ncol, SEXP _dest){
Rcpp::DataFrame source = Rcpp::DataFrame(_source);
Rcpp::GenericVector dest = Rcpp::GenericVector(_dest);
int nrow = Rcpp::as<int>(_nrow);
int ncol = Rcpp::as<int>(_ncol);
for (int j = 0; j < ncol; j ++){
Rcpp::RObject robj = source[j];
switch(robj.sexp_type()) {
case RAWSXP: {
Rcpp::RawVector z = source[j];
for (int i = 0; i < nrow; i ++) {
Rcpp::List l = dest[i];
l[j] = Rcpp::wrap(z[i]);}}
break;
case STRSXP: {
Rcpp::CharacterVector z = source[j];
for (int i = 0; i < nrow; i ++) {
Rcpp::List l = dest[i];
l[j] = Rcpp::wrap(z[i]);}}
break;
case LGLSXP: {
Rcpp::LogicalVector z = source[j];
for (int i = 0; i < nrow; i ++) {
Rcpp::List l = dest[i];
l[j] = Rcpp::wrap(z[i]);}}
break;
case REALSXP: {
Rcpp::NumericVector z = source[j];
for (int i = 0; i < nrow; i ++) {
Rcpp::List l = dest[i];
l[j] = Rcpp::wrap(z[i]);}}
break;
case INTSXP: {
Rcpp::IntegerVector z = source[j];
for (int i = 0; i < nrow; i ++) {
Rcpp::List l = dest[i];
l[j] = Rcpp::wrap(z[i]);}}
break;
default: {
throw UnsupportedType(robj.sexp_type());}}}
return Rcpp::wrap(_dest);}
Rcpp::IntegerVector process_subset_vector(Rcpp::RObject subset, int upper, bool zero_indexed) {
if (subset.sexp_type()!=INTSXP) {
throw std::runtime_error("subset vector must be an integer vector");
}
Rcpp::IntegerVector sout(subset);
if (!zero_indexed) {
sout=Rcpp::clone(sout);
for (auto& s : sout) { --s; }
}
for (auto sIt=sout.begin(); sIt!=sout.end(); ++sIt) {
if (*sIt < 0 || *sIt >= upper) {
throw std::runtime_error("subset indices out of range");
}
}
return sout;
}