@Override
public <T> T decode(BitBuffer bitbuffer, Class<T> classOfT, Annotation[] extraAnnotations) {
AnnotationStore annotations = new AnnotationStore(classOfT.getAnnotations(), extraAnnotations);
UperEncoder.logger.debug("SEQUENCE");
T result = UperEncoder.instantiate(classOfT);
Asn1ContainerFieldSorter sorter = new Asn1ContainerFieldSorter(classOfT);
boolean extensionPresent = false;
if (UperEncoder.hasExtensionMarker(annotations)) {
extensionPresent = bitbuffer.get();
UperEncoder.logger.debug(
"with extension marker, extension {}", extensionPresent ? "present!" : "absent");
}
// Bitmask for optional fields.
Deque<Boolean> optionalFieldsMask = new ArrayDeque<>(sorter.optionalOrdinaryFields.size());
for (Field f : sorter.optionalOrdinaryFields) {
optionalFieldsMask.add(bitbuffer.get());
UperEncoder.logger.debug(
"with optional field {} {}",
f.getName(),
optionalFieldsMask.getLast() ? "present" : "absent");
}
// All ordinary fields (fields within extension root).
for (Field f : sorter.ordinaryFields) {
if (!UperEncoder.isTestInstrumentation(f)
&& (UperEncoder.isMandatory(f)
|| (UperEncoder.isOptional(f) && optionalFieldsMask.pop()))) {
UperEncoder.logger.debug("Field : {}", f.getName());
try {
f.set(result, UperEncoder.decode2(bitbuffer, f.getType(), f.getAnnotations()));
} catch (IllegalAccessException e) {
throw new IllegalArgumentException(
"can't access 'set method' for field " + f + " of class " + classOfT + " " + e, e);
}
}
}
// Extension fields.
if (UperEncoder.hasExtensionMarker(annotations) && extensionPresent) {
// Number of extensions.
int numExtensions = (int) UperEncoder.decodeLengthOfBitmask(bitbuffer);
UperEncoder.logger.debug("sequence has {} extension(s)", numExtensions);
// Bitmask for extensions.
boolean[] bitmaskValueIsPresent = new boolean[numExtensions];
for (int i = 0; i < numExtensions; i++) {
bitmaskValueIsPresent[i] = bitbuffer.get();
UperEncoder.logger.debug(
"extension {} is {}", i, bitmaskValueIsPresent[i] ? "present" : "absent");
}
// Values.
UperEncoder.logger.debug("decoding extensions values...");
for (int i = 0; i < numExtensions; i++) {
UperEncoder.logger.debug(
"sequence extension {} {}", i, bitmaskValueIsPresent[i] ? "present" : "absent");
if (bitmaskValueIsPresent[i]) {
UperEncoder.logger.debug("decoding extension {}...", i);
Field field = sorter.extensionFields.size() > i ? sorter.extensionFields.get(i) : null;
Class<?> classOfElement = field != null ? field.getType() : null;
try {
Object decodedValue =
UperEncoder.decodeAsOpenType(bitbuffer, classOfElement, field.getAnnotations());
if (field != null) {
field.set(result, decodedValue);
}
} catch (IllegalArgumentException | IllegalAccessException e) {
throw new IllegalArgumentException("can't decode " + classOfT, e);
}
}
}
}
sorter.revertAccess();
return result;
}
@Override
public <T> T decode(BitBuffer bitbuffer, Class<T> classOfT, Annotation[] extraAnnotations) {
AnnotationStore annotations = new AnnotationStore(classOfT.getAnnotations(), extraAnnotations);
if (!Asn1VarSizeBitstring.class.isAssignableFrom(classOfT)) {
UperEncoder.logger.debug("Bitlist(fixed-size, all-named)");
FixedSize fixedSize = annotations.getAnnotation(FixedSize.class);
if (fixedSize == null) {
throw new UnsupportedOperationException(
"bitstrings of non-fixed size that do not extend Asn1VarSizeBitstring are not supported yet");
}
Asn1ContainerFieldSorter sorter = new Asn1ContainerFieldSorter(classOfT);
if (fixedSize.value() != sorter.ordinaryFields.size()) {
throw new IllegalArgumentException(
"Fixed size annotation "
+ fixedSize.value()
+ " does not match the number of fields "
+ sorter.ordinaryFields.size()
+ " in "
+ classOfT.getName());
}
if (UperEncoder.hasExtensionMarker(annotations)) {
boolean extensionPresent = bitbuffer.get();
if (extensionPresent) {
throw new UnsupportedOperationException(
"extensions in fixed-size bitlist are not supported yet");
}
}
T result = UperEncoder.instantiate(classOfT);
for (Field f : sorter.ordinaryFields) {
boolean value = bitbuffer.get();
UperEncoder.logger.debug("Field {} set to {}", f.getName(), value);
try {
f.set(result, value);
} catch (IllegalArgumentException | IllegalAccessException e) {
throw new IllegalArgumentException("can't decode " + classOfT, e);
}
}
return result;
} else {
UperEncoder.logger.debug("Bitlist(var-size)");
FixedSize fixedSize = annotations.getAnnotation(FixedSize.class);
SizeRange sizeRange = annotations.getAnnotation(SizeRange.class);
// We use reflection here to access protected method of Asn1VarSizeBitstring.
// Alternative would be to mandate BitSet constructors for all subclasses of
// Asn1VarSizeBitstring.
Method setBitMethod;
try {
setBitMethod =
Asn1VarSizeBitstring.class.getDeclaredMethod("setBit", int.class, boolean.class);
setBitMethod.setAccessible(true);
} catch (SecurityException | NoSuchMethodException e) {
throw new AssertionError("Can't find/access setBit " + e);
}
long size =
(fixedSize != null)
? fixedSize.value()
: (sizeRange != null)
? UperEncoder.decodeConstrainedInt(
bitbuffer, UperEncoder.intRangeFromSizeRange(sizeRange))
: badSize(classOfT);
T result = UperEncoder.instantiate(classOfT);
for (int i = 0; i < size; i++) {
try {
setBitMethod.invoke(result, i, bitbuffer.get());
} catch (IllegalArgumentException | InvocationTargetException | IllegalAccessException e) {
throw new IllegalArgumentException("Can't invoke setBit", e);
}
}
return result;
}
}
