/**
* Sets a handle internally used to create MetaClass implementations. When replacing the handle
* with a custom version, you should reuse the old handle to keep custom logic and to use the
* default logic as fall back. WARNING: experimental code, likely to change soon
*
* @param handle the handle
*/
public void setMetaClassCreationHandle(MetaClassCreationHandle handle) {
if (handle == null)
throw new IllegalArgumentException("Cannot set MetaClassCreationHandle to null value!");
ClassInfo.clearModifiedExpandos();
handle.setDisableCustomMetaClassLookup(
metaClassCreationHandle.isDisableCustomMetaClassLookup());
metaClassCreationHandle = handle;
}
public MetaClassRegistryImpl(final int loadDefault, final boolean useAccessible) {
this.useAccessible = useAccessible;
if (loadDefault == LOAD_DEFAULT) {
Map<CachedClass, List<MetaMethod>> map = new HashMap<CachedClass, List<MetaMethod>>();
// let's register the default methods
registerMethods(null, true, true, map);
final Class[] additionals = DefaultGroovyMethods.additionals;
for (int i = 0; i != additionals.length; ++i) {
createMetaMethodFromClass(map, additionals[i]);
}
Class[] pluginDGMs = VMPluginFactory.getPlugin().getPluginDefaultGroovyMethods();
for (Class plugin : pluginDGMs) {
registerMethods(plugin, false, true, map);
}
registerMethods(DefaultGroovyStaticMethods.class, false, false, map);
Class[] staticPluginDGMs = VMPluginFactory.getPlugin().getPluginStaticGroovyMethods();
for (Class plugin : staticPluginDGMs) {
registerMethods(plugin, false, false, map);
}
for (Map.Entry<CachedClass, List<MetaMethod>> e : map.entrySet()) {
CachedClass cls = e.getKey();
cls.setNewMopMethods(e.getValue());
}
}
installMetaClassCreationHandle();
final MetaClass emcMetaClass = metaClassCreationHandle.create(ExpandoMetaClass.class, this);
emcMetaClass.initialize();
ClassInfo.getClassInfo(ExpandoMetaClass.class).setStrongMetaClass(emcMetaClass);
addMetaClassRegistryChangeEventListener(
new MetaClassRegistryChangeEventListener() {
public void updateConstantMetaClass(MetaClassRegistryChangeEvent cmcu) {
synchronized (metaClassInfo) {
metaClassInfo.add(cmcu.getNewMetaClass());
DefaultMetaClassInfo.getNewConstantMetaClassVersioning();
Class c = cmcu.getClassToUpdate();
DefaultMetaClassInfo.setPrimitiveMeta(c, cmcu.getNewMetaClass() == null);
Field sdyn;
try {
sdyn = c.getDeclaredField(Verifier.STATIC_METACLASS_BOOL);
sdyn.setBoolean(null, cmcu.getNewMetaClass() != null);
} catch (Throwable e) {
// DO NOTHING
}
}
}
});
}
public void setMetaClass(Object obj, MetaClass theMetaClass) {
Class theClass = obj.getClass();
final ClassInfo info = ClassInfo.getClassInfo(theClass);
MetaClass oldMC = null;
info.lock();
try {
oldMC = info.getPerInstanceMetaClass(obj);
info.setPerInstanceMetaClass(obj, theMetaClass);
} finally {
info.unlock();
}
fireConstantMetaClassUpdate(obj, theClass, oldMC, theMetaClass);
}
/**
* if oldMc is null, newMc will replace whatever meta class was used before. if oldMc is not null,
* then newMc will be used only if he stored mc is the same as oldMc
*/
private void setMetaClass(Class theClass, MetaClass oldMc, MetaClass newMc) {
final ClassInfo info = ClassInfo.getClassInfo(theClass);
MetaClass mc = null;
info.lock();
try {
mc = info.getStrongMetaClass();
info.setStrongMetaClass(newMc);
} finally {
info.unlock();
}
if ((oldMc == null && mc != newMc) || (oldMc != null && mc != newMc && mc != oldMc)) {
fireConstantMetaClassUpdate(null, theClass, mc, newMc);
}
}
public MetaClass getMetaClass(Object obj) {
return ClassInfo.getClassInfo(obj.getClass()).getMetaClass(obj);
}
public final MetaClass getMetaClass(Class theClass) {
return ClassInfo.getClassInfo(theClass).getMetaClass();
}