@Override
@TruffleBoundary
protected void printValue(RAbstractListVector s, PrintContext printCtx) throws IOException {
RAbstractIntVector dims = Utils.<RAbstractIntVector>castTo(s.getAttr(RRuntime.DIM_ATTR_KEY));
if (dims != null && dims.getLength() > 1) {
printDimList(s, printCtx);
} else {
// no dim()
printNoDimList(s, printCtx);
}
}
@TruffleBoundary
static void printNoDimList(RAbstractContainer s, PrintContext printCtx) throws IOException {
final PrintParameters pp = printCtx.parameters();
final PrintWriter out = printCtx.output();
final StringBuilder tagbuf = printCtx.getOrCreateTagBuffer();
// save the original length so that we can restore the original value
int taglen = tagbuf.length();
int ns = s.getLength();
RAbstractStringVector names;
names = Utils.castTo(RRuntime.asAbstractVector(s.getNames(dummyAttrProfiles)));
if (ns > 0) {
int npr = (ns <= pp.getMax() + 1) ? ns : pp.getMax();
/* '...max +1' ==> will omit at least 2 ==> plural in msg below */
for (int i = 0; i < npr; i++) {
if (i > 0) {
out.println();
}
String ss = names == null ? null : Utils.<String>getDataAt(names, i);
if (ss != null && !ss.isEmpty()) {
/*
* Bug for L <- list(`a\\b` = 1, `a\\c` = 2) : const char *ss =
* translateChar(STRING_ELT(names, i));
*/
if (taglen + ss.length() > TAGBUFLEN) {
if (taglen <= TAGBUFLEN) {
tagbuf.append("$...");
}
} else {
/*
* we need to distinguish character NA from "NA", which is a valid (if
* non-syntactic) name
*/
if (ss == RRuntime.STRING_NA) {
tagbuf.append("$<NA>");
} else if (RDeparse.isValidName(ss)) {
tagbuf.append(String.format("$%s", ss));
} else {
tagbuf.append(String.format("$`%s`", ss));
}
}
} else {
if (taglen + indexWidth(i) > TAGBUFLEN) {
if (taglen <= TAGBUFLEN) {
tagbuf.append("$...");
}
} else {
tagbuf.append(String.format("[[%d]]", i + 1));
}
}
out.println(tagbuf);
Object si = s.getDataAtAsObject(i);
if (si instanceof RAttributable && ((RAttributable) si).isObject()) {
RContext.getEngine().printResult(si);
} else {
ValuePrinters.INSTANCE.print(si, printCtx);
ValuePrinters.printNewLine(printCtx);
}
tagbuf.setLength(taglen); // reset tag buffer to the original value
}
if (npr < ns) {
out.printf("\n [ reached getOption(\"max.print\") -- omitted %d entries ]", ns - npr);
}
} else {
/* ns = length(s) == 0 */
/* Formal classes are represented as empty lists */
String className = null;
if (printCtx.printerNode().isObject(s) && printCtx.printerNode().isMethodDispatchOn()) {
RAbstractStringVector klass =
Utils.castTo(RRuntime.asAbstractVector(s.getAttr(RRuntime.CLASS_ATTR_KEY)));
if (klass != null && klass.getLength() == 1) {
String ss = klass.getDataAt(0);
String str = snprintf(200, ".__C__%s", ss);
Frame frame = com.oracle.truffle.r.runtime.Utils.getActualCurrentFrame();
if (ReadVariableNode.lookupAny(str, frame, false) != null) {
className = ss;
}
}
}
if (className != null) {
out.printf("An object of class \"%s\"", className);
} else {
if (names != null) {
out.print("named ");
}
out.print("list()");
}
}
}