@Override
public String printObject() {
try {
final LispThread thread = LispThread.currentThread();
// FIXME
if (typep(Symbol.RESTART) != NIL) {
Symbol PRINT_RESTART = PACKAGE_SYS.intern("PRINT-RESTART");
LispObject fun = PRINT_RESTART.getSymbolFunction();
StringOutputStream stream = new StringOutputStream();
thread.execute(fun, this, stream);
return stream.getString().getStringValue();
}
if (_PRINT_STRUCTURE_.symbolValue(thread) == NIL)
return unreadableString(structureClass.getName().printObject());
int maxLevel = Integer.MAX_VALUE;
LispObject printLevel = Symbol.PRINT_LEVEL.symbolValue(thread);
if (printLevel instanceof Fixnum) maxLevel = ((Fixnum) printLevel).value;
LispObject currentPrintLevel = _CURRENT_PRINT_LEVEL_.symbolValue(thread);
int currentLevel = Fixnum.getValue(currentPrintLevel);
if (currentLevel >= maxLevel && slots.length > 0) return "#";
StringBuilder sb = new StringBuilder("#S(");
sb.append(structureClass.getName().printObject());
if (currentLevel < maxLevel) {
LispObject effectiveSlots = structureClass.getSlotDefinitions();
LispObject[] effectiveSlotsArray = effectiveSlots.copyToArray();
Debug.assertTrue(effectiveSlotsArray.length == slots.length);
final LispObject printLength = Symbol.PRINT_LENGTH.symbolValue(thread);
final int limit;
if (printLength instanceof Fixnum)
limit = Math.min(slots.length, ((Fixnum) printLength).value);
else limit = slots.length;
final boolean printCircle = (Symbol.PRINT_CIRCLE.symbolValue(thread) != NIL);
for (int i = 0; i < limit; i++) {
sb.append(' ');
SimpleVector slotDefinition = (SimpleVector) effectiveSlotsArray[i];
// FIXME AREF(1)
LispObject slotName = slotDefinition.AREF(1);
Debug.assertTrue(slotName instanceof Symbol);
sb.append(':');
sb.append(((Symbol) slotName).name.getStringValue());
sb.append(' ');
if (printCircle) {
StringOutputStream stream = new StringOutputStream();
thread.execute(Symbol.OUTPUT_OBJECT.getSymbolFunction(), slots[i], stream);
sb.append(stream.getString().getStringValue());
} else sb.append(slots[i].printObject());
}
if (limit < slots.length) sb.append(" ...");
}
sb.append(')');
return sb.toString();
} catch (StackOverflowError e) {
error(new StorageCondition("Stack overflow."));
return null; // Not reached.
}
}
static void maybeSaveSymbolFunction(LispObject first, LispObject fun) {
if (first instanceof Symbol) {
Symbol symbol = (Symbol) first;
LispObject sfun = symbol.getSymbolFunction();
if (sfun != fun) {
if (sfun == null) {
symbol.setSymbolFunction(sfun);
return;
}
// symbol.setSymbolFunction(fun);
}
}
}
public StructureObject(Symbol symbol) {
structureClass = (StructureClass) LispClass.findClass(symbol /*, true*/); // Might return null.
if (structureClass == null) {
System.err.println("No mitens sitten: " + BuiltInClass.SYSTEM_STREAM.toString());
System.err.println("joopa joo:" + Symbol.SYSTEM_STREAM.name);
System.err.println(
"Oh noes, structure object got a null class:"
+ symbol.toString()
+ ", symbol name:"
+ symbol.name);
}
slots = new LispObject[0];
}