@TruffleBoundary
protected static Object encodeArgumentPairList(RArgsValuesAndNames args, String symbolName) {
Object list = RNull.instance;
for (int i = args.getLength() - 1; i >= 0; i--) {
String name = args.getSignature().getName(i);
list =
RDataFactory.createPairList(
args.getArgument(i),
list,
name == null ? RNull.instance : RDataFactory.createSymbolInterned(name));
}
list = RDataFactory.createPairList(symbolName, list);
return list;
}
@Override
public Object getRelementImpl(int index) {
if (index == 0) {
String name = getBuiltin().getName();
assert name == name.intern();
return RDataFactory.createSymbol(name);
} else {
throw RInternalError.unimplemented();
}
}