/**
* Attempt to cast this NBT tag as a list.
*
* @param tag - the NBT tag to cast.
* @return This instance as a list.
* @throws UnsupportedOperationException If this is not a list.
*/
public static NbtList<?> asList(NbtBase<?> tag) {
if (tag instanceof NbtList) return (NbtList<?>) tag;
else if (tag != null)
throw new UnsupportedOperationException(
"Cannot cast a " + tag.getClass() + "( " + tag.getType() + ") to TAG_LIST.");
else throw new IllegalArgumentException("Tag cannot be NULL.");
}
/**
* Attempt to cast this NBT tag as a compund.
*
* @param tag - the NBT tag to cast.
* @return This instance as a compound.
* @throws UnsupportedOperationException If this is not a compound.
*/
public static NbtCompound asCompound(NbtBase<?> tag) {
if (tag instanceof NbtCompound) return (NbtCompound) tag;
else if (tag != null)
throw new UnsupportedOperationException(
"Cannot cast a " + tag.getClass() + "( " + tag.getType() + ") to TAG_COMPUND.");
else throw new IllegalArgumentException("Tag cannot be NULL.");
}
/**
* Get a NBT wrapper from a NBT base.
*
* <p>This may clone the content if the NbtBase is not a NbtWrapper.
*
* @param <T> Type
* @param base - the base class.
* @return A NBT wrapper.
*/
@SuppressWarnings("unchecked")
public static <T> NbtWrapper<T> fromBase(NbtBase<T> base) {
if (base instanceof NbtWrapper) {
return (NbtWrapper<T>) base;
} else {
if (base.getType() == NbtType.TAG_COMPOUND) {
// Load into a NBT-backed wrapper
WrappedCompound copy = WrappedCompound.fromName(base.getName());
T value = base.getValue();
copy.setValue((Map<String, NbtBase<?>>) value);
return (NbtWrapper<T>) copy;
} else if (base.getType() == NbtType.TAG_LIST) {
// As above
NbtList<T> copy = WrappedList.fromName(base.getName());
copy.setValue((List<NbtBase<T>>) base.getValue());
return (NbtWrapper<T>) copy;
} else {
// Copy directly
NbtWrapper<T> copy = ofWrapper(base.getType(), base.getName());
copy.setValue(base.getValue());
return copy;
}
}
}
