private static Method notBogus(Method method, String propertyName, Class<?> paramType) {
if (method == null) return null;
Container reader = Container.readerAnnotation(method);
if (reader != null
&& (!reader.name().equals(propertyName)
|| !reader.enabled()
|| !method.getReturnType().isAssignableFrom(paramType))) {
return null;
} else {
return method;
}
}
private static MetaData buildMetaData(Class<? extends QObject> clazz) {
MetaData metaData = new MetaData();
List<Method> slots = new ArrayList<Method>();
Hashtable<String, Method> propertyReaders = new Hashtable<String, Method>();
Hashtable<String, Method> propertyWriters = new Hashtable<String, Method>();
Hashtable<String, Object> propertyDesignables = new Hashtable<String, Object>();
Hashtable<String, Method> propertyResetters = new Hashtable<String, Method>();
Hashtable<String, Boolean> propertyUser = new Hashtable<String, Boolean>();
// First we get all enums actually declared in the class
Hashtable<String, Class<?>> enums = new Hashtable<String, Class<?>>();
int enumConstantCount = queryEnums(clazz, enums);
int enumCount = enums.size(); // Get the size before we add external enums
Method declaredMethods[] = clazz.getDeclaredMethods();
for (Method declaredMethod : declaredMethods) {
if (!declaredMethod.isAnnotationPresent(QtBlockedSlot.class)
&& ((declaredMethod.getModifiers() & Modifier.STATIC) != Modifier.STATIC)) {
// If we can't convert the type, we don't list it
String methodParameters = methodParameters(declaredMethod);
String returnType = declaredMethod.getReturnType().getName();
if ((methodParameters.equals("")
|| !internalTypeNameOfParameters(declaredMethod, 1).equals(""))
&& (returnType.equals("")
|| returnType.equals("void")
|| !internalTypeNameOfClass(declaredMethod.getReturnType(), 0).equals(""))) {
slots.add(declaredMethod);
}
}
// Rules for readers:
// 1. Zero arguments
// 2. Return something other than void
// 3. We can convert the type
Container reader = Container.readerAnnotation(declaredMethod);
{
if (reader != null
&& reader.enabled()
&& isValidGetter(declaredMethod)
&& !internalTypeNameOfClass(declaredMethod.getReturnType(), 0).equals("")) {
// If the return type of the property reader is not registered, then
// we need to register the owner class in the meta object (in which case
// it has to be a QObject)
Class<?> returnType = declaredMethod.getReturnType();
int count = putEnumTypeInHash(returnType, enums);
if (count < 0) {
System.err.println(
"Problem in property '"
+ reader.name()
+ "' in '"
+ clazz.getName()
+ "': Only enum types 1. declared inside QObject subclasses or the "
+ "Qt interface and 2. declared without the QtBlockedEnum annotation "
+ "are supported for properties");
continue;
}
propertyReaders.put(reader.name(), declaredMethod);
propertyDesignables.put(reader.name(), isDesignable(declaredMethod, clazz));
propertyUser.put(reader.name(), isUser(declaredMethod));
}
}
// Rules for writers:
// 1. Takes exactly one argument
// 2. Return void
// 3. We can convert the type
Container writer = Container.writerAnnotation(declaredMethod);
{
if (writer != null && writer.enabled() && isValidSetter(declaredMethod)) {
propertyWriters.put(writer.name(), declaredMethod);
}
}
// Rules for resetters:
// 1. No arguments
// 2. Return void
{
Container resetter = Container.resetterAnnotation(declaredMethod);
if (resetter != null
&& declaredMethod.getParameterTypes().length == 0
&& declaredMethod.getReturnType() == Void.TYPE) {
propertyResetters.put(resetter.name(), declaredMethod);
}
}
// Check naming convention by looking for setXxx patterns, but only if it hasn't already been
// annotated as a writer
String declaredMethodName = declaredMethod.getName();
if (writer == null
&& reader
== null // reader can't be a writer, cause the signature doesn't match, just an
// optimization
&& declaredMethodName.startsWith("set")
&& declaredMethodName.length() > 3
&& Character.isUpperCase(declaredMethodName.charAt(3))
&& isValidSetter(declaredMethod)) {
Class<?> paramType = declaredMethod.getParameterTypes()[0];
String propertyName =
Character.toLowerCase(declaredMethodName.charAt(3)) + declaredMethodName.substring(4);
if (!propertyReaders.containsKey(propertyName)) {
// We need a reader as well, and the reader must not be annotated as disabled
// The reader can be called 'xxx', 'getXxx', 'isXxx' or 'hasXxx'
// (just booleans for the last two)
Method readerMethod =
notBogus(getMethod(clazz, propertyName, null), propertyName, paramType);
if (readerMethod == null)
readerMethod =
notBogus(
getMethod(clazz, "get" + capitalizeFirst(propertyName), null),
propertyName,
paramType);
if (readerMethod == null && isBoolean(paramType))
readerMethod =
notBogus(
getMethod(clazz, "is" + capitalizeFirst(propertyName), null),
propertyName,
paramType);
if (readerMethod == null && isBoolean(paramType))
readerMethod =
notBogus(
getMethod(clazz, "has" + capitalizeFirst(propertyName), null),
propertyName,
paramType);
if (readerMethod != null) { // yay
reader = Container.readerAnnotation(readerMethod);
if (reader == null) {
propertyReaders.put(propertyName, readerMethod);
propertyWriters.put(propertyName, declaredMethod);
propertyDesignables.put(propertyName, isDesignable(readerMethod, clazz));
propertyUser.put(propertyName, isUser(readerMethod));
}
}
}
}
}
Field declaredFields[] = clazz.getDeclaredFields();
List<Field> signalFields = new ArrayList<Field>();
List<QtJambiInternal.ResolvedSignal> resolvedSignals =
new ArrayList<QtJambiInternal.ResolvedSignal>();
for (Field declaredField : declaredFields) {
if (QtJambiInternal.isSignal(declaredField.getType())) {
// If we can't convert all the types we don't list the signal
QtJambiInternal.ResolvedSignal resolvedSignal =
QtJambiInternal.resolveSignal(declaredField, declaredField.getDeclaringClass());
String signalParameters = signalParameters(resolvedSignal);
if (signalParameters.length() == 0
|| internalTypeNameOfSignal(resolvedSignal.types, signalParameters, 1).length() != 0) {
signalFields.add(declaredField);
resolvedSignals.add(resolvedSignal);
}
}
}
metaData.signalsArray = signalFields.toArray(new Field[0]);
{
int functionCount = slots.size() + signalFields.size();
int propertyCount = propertyReaders.keySet().size();
int propertyNotifierCount = 0; // FIXME (see QTabWidget)
int constructorCount = 0; // FIXME (see QObject)
int metaObjectFlags = 0; // FIXME DynamicMetaObject
// Until 4.7.x QtJambi used revision=1 however due to a change in the way
// 4.7.x works some features of QtJambi stopped working.
// revision 1 = MO_HEADER_LEN=10
// revision 2 (4.5.x) = MO_HEADER_LEN=12 (added: constructorCount, constructorData)
// revision 3 = MO_HEADER_LEN=13 (added: flags)
// revision 4 (4.6.x) = MO_HEADER_LEN=14 (added: signalCount)
// revision 5 (4.7.x) = MO_HEADER_LEN=14 (normalization)
// revision 6 (4.8.x) = MO_HEADER_LEN=14 (added support for qt_static_metacall)
// revision 7 (5.0.x) = MO_HEADER_LEN=14 (Qt5 to break backwards compatibility)
// The format is compatible to share the same encoding code
// then we can change the revision to suit the Qt
/// implementation we are working with.
final int MO_HEADER_LEN = 14; // header size
final int CLASSINFO_LEN = 2; // class info size
int len = MO_HEADER_LEN + CLASSINFO_LEN;
len += functionCount * 5;
len += propertyCount * 3;
len += propertyNotifierCount;
len += enumCount * 4;
len += enumConstantCount * 2;
len += constructorCount * 5;
metaData.metaData = new int[len + 1]; // add EOD <NUL>
int intDataOffset = 0; // the offsets used by this descriptor are based on ints (32bit values)
// Add static header
metaData.metaData[0] = resolveMetaDataRevision(); // Revision
// metaData[1] = 0 // class name (ints default to offset 0 into strings)
intDataOffset += MO_HEADER_LEN;
metaData.metaData[2] = 1; // class info count
metaData.metaData[3] = intDataOffset; // class info offset
intDataOffset += CLASSINFO_LEN;
// Functions always start right after this header at offset MO_HEADER_LEN + CLASSINFO_LEN
metaData.metaData[4] = functionCount;
metaData.metaData[5] = functionCount == 0 ? 0 : intDataOffset;
intDataOffset += functionCount * 5; // Each function takes 5 ints
metaData.metaData[6] = propertyCount;
metaData.metaData[7] = propertyCount == 0 ? 0 : intDataOffset;
intDataOffset +=
(propertyCount * 3)
+ propertyNotifierCount; // Each property takes 3 ints and each propertNotifier 1 int
// Enums
metaData.metaData[8] = enumCount;
metaData.metaData[9] = enumCount == 0 ? 0 : intDataOffset;
intDataOffset +=
(enumCount * 4)
+ (enumConstantCount * 2); // Each enum takes 4 ints and each enumConst takes 2 ints
// revision 1 ends here
metaData.metaData[10] = constructorCount;
metaData.metaData[11] = constructorCount == 0 ? 0 : intDataOffset;
intDataOffset += constructorCount * 5;
// revision 2 ends here
metaData.metaData[12] = metaObjectFlags; // flags
// revision 3 ends here
metaData.metaData[13] = signalFields.size(); // signalCount
// revision 4, 5 and 6 ends here
int offset = 0;
int metaDataOffset = MO_HEADER_LEN; // Header is currently 14 ints long
Hashtable<String, Integer> strings = new Hashtable<String, Integer>();
List<String> stringsInOrder = new ArrayList<String>();
// Class name
{
String className = clazz.getName().replace(".", "::");
stringsInOrder.add(className);
strings.put(className, offset);
offset += className.length() + 1;
}
// Class info
{
offset +=
addString(
metaData.metaData,
strings,
stringsInOrder,
"__qt__binding_shell_language",
offset,
metaDataOffset++);
offset +=
addString(
metaData.metaData, strings, stringsInOrder, "Qt Jambi", offset, metaDataOffset++);
}
metaData.originalSignatures = new String[signalFields.size() + slots.size()];
// Signals (### make sure enum types are covered)
for (int i = 0; i < signalFields.size(); ++i) {
Field signalField = signalFields.get(i);
QtJambiInternal.ResolvedSignal resolvedSignal = resolvedSignals.get(i);
String javaSignalParameters = signalParameters(resolvedSignal);
metaData.originalSignatures[i] =
resolvedSignal.name
+ (javaSignalParameters.length() > 0 ? '<' + javaSignalParameters + '>' : "");
String signalParameters =
internalTypeNameOfSignal(resolvedSignal.types, javaSignalParameters, 1);
// Signal name
offset +=
addString(
metaData.metaData,
strings,
stringsInOrder,
resolvedSignal.name + "(" + signalParameters + ")",
offset,
metaDataOffset++);
// Signal parameters
offset +=
addString(
metaData.metaData,
strings,
stringsInOrder,
signalParameters,
offset,
metaDataOffset++);
// Signal type (signals are always void in Qt Jambi)
offset +=
addString(metaData.metaData, strings, stringsInOrder, "", offset, metaDataOffset++);
// Signal tag (Currently not supported by the moc either)
offset +=
addString(metaData.metaData, strings, stringsInOrder, "", offset, metaDataOffset++);
// Signal flags
int flags = MethodSignal;
int modifiers = signalField.getModifiers();
if ((modifiers & Modifier.PRIVATE) == Modifier.PRIVATE) flags |= MethodAccessPrivate;
else if ((modifiers & Modifier.PROTECTED) == Modifier.PROTECTED)
flags |= MethodAccessProtected;
else if ((modifiers & Modifier.PUBLIC) == Modifier.PUBLIC) flags |= MethodAccessPublic;
metaData.metaData[metaDataOffset++] = flags;
}
// Slots (### make sure enum types are covered, ### also test QFlags)
for (int i = 0; i < slots.size(); ++i) {
Method slot = slots.get(i);
String javaMethodSignature = methodSignature(slot);
metaData.originalSignatures[signalFields.size() + i] = javaMethodSignature;
// Slot signature
offset +=
addString(
metaData.metaData,
strings,
stringsInOrder,
internalTypeNameOfMethodSignature(slot, 1),
offset,
metaDataOffset++);
// Slot parameters
offset +=
addString(
metaData.metaData,
strings,
stringsInOrder,
internalTypeNameOfParameters(slot, 1),
offset,
metaDataOffset++);
// Slot type
String returnType = slot.getReturnType().getName();
if (returnType.equals("void")) returnType = "";
offset +=
addString(
metaData.metaData,
strings,
stringsInOrder,
internalTypeNameOfClass(slot.getReturnType(), 0),
offset,
metaDataOffset++);
// Slot tag (Currently not supported by the moc either)
offset +=
addString(metaData.metaData, strings, stringsInOrder, "", offset, metaDataOffset++);
// Slot flags
int flags = MethodSlot;
int modifiers = slot.getModifiers();
if ((modifiers & Modifier.PRIVATE) == Modifier.PRIVATE) flags |= MethodAccessPrivate;
else if ((modifiers & Modifier.PROTECTED) == Modifier.PROTECTED)
flags |= MethodAccessProtected;
else if ((modifiers & Modifier.PUBLIC) == Modifier.PUBLIC) flags |= MethodAccessPublic;
metaData.metaData[metaDataOffset++] = flags;
}
metaData.slotsArray = slots.toArray(new Method[0]);
String propertyNames[] = propertyReaders.keySet().toArray(new String[0]);
metaData.propertyReadersArray = new Method[propertyNames.length];
metaData.propertyResettersArray = new Method[propertyNames.length];
metaData.propertyWritersArray = new Method[propertyNames.length];
metaData.propertyDesignablesArray = new Method[propertyNames.length];
for (int i = 0; i < propertyNames.length; ++i) {
Method reader = propertyReaders.get(propertyNames[i]);
Method writer = propertyWriters.get(propertyNames[i]);
Method resetter = propertyResetters.get(propertyNames[i]);
Object designableVariant = propertyDesignables.get(propertyNames[i]);
boolean isUser = propertyUser.get(propertyNames[i]);
if (writer != null
&& !reader.getReturnType().isAssignableFrom(writer.getParameterTypes()[0])) {
System.err.println(
"QtJambiInternal.buildMetaData: Writer for property "
+ propertyNames[i]
+ " takes a type which is incompatible with reader's return type.");
writer = null;
}
// Name
offset +=
addString(
metaData.metaData,
strings,
stringsInOrder,
propertyNames[i],
offset,
metaDataOffset++);
// Type (need to special case flags and enums)
Class<?> t = reader.getReturnType();
boolean isEnumOrFlags = Enum.class.isAssignableFrom(t) || QFlags.class.isAssignableFrom(t);
String typeName = null;
if (isEnumOrFlags
&& t.getDeclaringClass() != null
&& QObject.class.isAssignableFrom(t.getDeclaringClass())) {
// To avoid using JObjectWrapper for enums and flags (which is required in certain cases.)
typeName = t.getDeclaringClass().getName().replace(".", "::") + "::" + t.getSimpleName();
} else {
typeName = internalTypeNameOfClass(t, 0);
}
offset +=
addString(
metaData.metaData, strings, stringsInOrder, typeName, offset, metaDataOffset++);
int designableFlags = 0;
if (designableVariant instanceof Boolean) {
if ((Boolean) designableVariant) designableFlags = PropertyDesignable;
} else if (designableVariant instanceof Method) {
designableFlags = PropertyResolveDesignable;
metaData.propertyDesignablesArray[i] = (Method) designableVariant;
}
// Flags
metaData.metaData[metaDataOffset++] =
PropertyReadable
| PropertyStored
| designableFlags
| (writer != null ? PropertyWritable : 0)
| (resetter != null ? PropertyResettable : 0)
| (isEnumOrFlags ? PropertyEnumOrFlag : 0)
| (isUser ? PropertyUser : 0);
metaData.propertyReadersArray[i] = reader;
metaData.propertyWritersArray[i] = writer;
metaData.propertyResettersArray[i] = resetter;
}
// Each property notifier takes 1 int // FIXME
// Enum types
int enumConstantOffset = metaDataOffset + enumCount * 4;
Hashtable<String, Class<?>> enclosingClasses = new Hashtable<String, Class<?>>();
Collection<Class<?>> classes = enums.values();
for (Class<?> cls : classes) {
Class<?> enclosingClass = cls.getEnclosingClass();
if (enclosingClass.equals(clazz)) {
// Name
offset +=
addString(
metaData.metaData,
strings,
stringsInOrder,
cls.getSimpleName(),
offset,
metaDataOffset++);
// Flags (1 == flags, 0 == no flags)
metaData.metaData[metaDataOffset++] = QFlags.class.isAssignableFrom(cls) ? 0x1 : 0x0;
// Get the enum class
Class<?> enumClass = Enum.class.isAssignableFrom(cls) ? cls : null;
if (enumClass == null) {
enumClass = getEnumForQFlags(cls);
}
enumConstantCount = enumClass.getEnumConstants().length;
// Count
metaData.metaData[metaDataOffset++] = enumConstantCount;
// Data
metaData.metaData[metaDataOffset++] = enumConstantOffset;
enumConstantOffset += 2 * enumConstantCount;
} else if (!enclosingClass.isAssignableFrom(clazz)
&& !enclosingClasses.contains(enclosingClass.getName())) {
// If the enclosing class of an enum is not in the current class hierarchy, then
// the generated meta object needs to have a pointer to its meta object in the
// extra-data.
enclosingClasses.put(enclosingClass.getName(), enclosingClass);
}
}
metaData.extraDataArray = enclosingClasses.values().toArray(new Class<?>[0]);
// Enum constants
for (Class<?> cls : classes) {
if (cls.getEnclosingClass().equals(clazz)) {
// Get the enum class
Class<?> enumClass = Enum.class.isAssignableFrom(cls) ? cls : null;
if (enumClass == null) {
enumClass = getEnumForQFlags(cls);
}
Enum<?> enumConstants[] = (Enum[]) enumClass.getEnumConstants();
for (Enum<?> enumConstant : enumConstants) {
// Key
offset +=
addString(
metaData.metaData,
strings,
stringsInOrder,
enumConstant.name(),
offset,
metaDataOffset++);
// Value
metaData.metaData[metaDataOffset++] =
enumConstant instanceof QtEnumerator
? ((QtEnumerator) enumConstant).value()
: enumConstant.ordinal();
}
}
}
// EOD
metaData.metaData[metaDataOffset++] = 0;
int stringDataOffset = 0;
metaData.stringData = new byte[offset + 1];
for (String s : stringsInOrder) {
assert stringDataOffset == strings.get(s);
System.arraycopy(s.getBytes(), 0, metaData.stringData, stringDataOffset, s.length());
stringDataOffset += s.length();
metaData.stringData[stringDataOffset++] = 0;
}
}
return metaData;
}