private LispObject badIndex(int n) {
StringBuilder sb = new StringBuilder("Invalid slot index ");
sb.append(Fixnum.getInstance(n).princToString());
sb.append(" for ");
sb.append(princToString());
return error(new LispError(sb.toString()));
}
@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.
}
}
@Override
public LispObject printObject() {
final LispThread thread = LispThread.currentThread();
final LispObject printLength = Symbol.PRINT_LENGTH.symbolValue(thread);
final int maxLength;
if (printLength.isFixnum()) maxLength = ((Fixnum) printLength).value;
else maxLength = Integer.MAX_VALUE;
final LispObject printLevel = Symbol.PRINT_LEVEL.symbolValue(thread);
final int maxLevel;
if (printLevel.isFixnum()) maxLevel = ((Fixnum) printLevel).value;
else maxLevel = Integer.MAX_VALUE;
StringBuilder sb = new StringBuilder();
if (car == Symbol.QUOTE) {
if (cdr.isCons()) {
// Not a dotted list.
if (cdr.cdr() == NIL) {
sb.append('\'');
sb.append(cdr.car().printObject());
return new SimpleString(sb.toString());
}
}
}
if (car == Symbol.FUNCTION) {
if (cdr.isCons()) {
// Not a dotted list.
if (cdr.cdr() == NIL) {
sb.append("#'");
sb.append(cdr.car().printObject().toString());
return new SimpleString(sb.toString());
}
}
}
LispObject currentPrintLevel = _CURRENT_PRINT_LEVEL_.symbolValue(thread);
int currentLevel = Fixnum.getValue(currentPrintLevel);
if (currentLevel < maxLevel) {
final SpecialBindingsMark mark = thread.markSpecialBindings();
thread.bindSpecial(_CURRENT_PRINT_LEVEL_, currentPrintLevel.incr());
try {
int count = 0;
boolean truncated = false;
sb.append('(');
if (count < maxLength) {
LispObject p = this;
sb.append(p.car().printObject());
++count;
while ((p = p.cdr()).isCons()) {
sb.append(' ');
if (count < maxLength) {
sb.append(p.car().printObject());
++count;
} else {
truncated = true;
break;
}
}
if (!truncated && p != NIL) {
sb.append(" . ");
sb.append(p.printObject());
}
} else truncated = true;
if (truncated) sb.append("...");
sb.append(')');
} finally {
thread.resetSpecialBindings(mark);
}
} else sb.append('#');
return new SimpleString(sb.toString());
}