public LabelReferences(Delegator delegator, LabelManagerFactory factory) {
this.delegator = delegator;
this.labels = factory.getLabels();
DelegatorElement delegatorInfo = null;
try {
delegatorInfo = EntityConfigUtil.getDelegator(delegator.getDelegatorBaseName());
} catch (GenericEntityConfException e) {
Debug.logWarning(e, "Exception thrown while getting delegator config: ", module);
}
String modelName;
if (delegatorInfo != null) {
modelName = delegatorInfo.getEntityModelReader();
} else {
modelName = "main";
}
// since we do not associate a dispatcher to this DispatchContext, it is important to set a name
// of an existing entity model reader:
// in this way it will be possible to retrieve the service models from the cache
this.dispatchContext = new DispatchContext(modelName, this.getClass().getClassLoader(), null);
Collection<LabelInfo> infoList = this.labels.values();
for (LabelInfo labelInfo : infoList) {
this.labelSet.add(labelInfo.getLabelKey());
}
Collection<ComponentConfig> componentConfigs = ComponentConfig.getAllComponents();
for (ComponentConfig config : componentConfigs) {
String rootFolder = config.getRootLocation();
rootFolder = rootFolder.replace('\\', '/');
if (!rootFolder.endsWith("/")) {
rootFolder = rootFolder + "/";
}
this.rootFolders.add(rootFolder);
}
}
@Override
public void visitLabel(final Label label) {
if (first) {
LabelInfo.setTarget(label);
}
if (successor) {
LabelInfo.setSuccessor(label);
}
}
private void visitSwitchInsn(final Label dflt, final Label[] labels) {
LabelInfo.resetDone(dflt);
LabelInfo.resetDone(labels);
setTargetIfNotDone(dflt);
for (final Label l : labels) {
setTargetIfNotDone(l);
}
successor = false;
first = false;
}
@Override
public void visitTryCatchBlock(
final Label start, final Label end, final Label handler, final String type) {
// Enforce probe at the beginning of the block. Assuming the start of
// the block already is successor of some other code, adding a target
// makes the start a multitarget. However, if the start of the block
// also is the start of the method, no probe will be added.
LabelInfo.setTarget(start);
// Mark exception handler as possible target of the block
LabelInfo.setTarget(handler);
}
@Override
public void visitJumpInsn(final int opcode, final Label label) {
LabelInfo.setTarget(label);
if (opcode == Opcodes.JSR) {
throw new AssertionError("Subroutines not supported.");
}
successor = opcode != Opcodes.GOTO;
first = false;
}
/**
* Rename label references in breaks and continues.
*
* @param node The break or continue node.
*/
private void visitBreakOrContinue(Node node) {
Node nameNode = node.getFirstChild();
if (nameNode != null) {
// This is a named break or continue;
String name = nameNode.getString();
Preconditions.checkState(!name.isEmpty());
LabelInfo li = getLabelInfo(name);
if (li != null) {
String newName = getNameForId(li.id);
// Mark the label as referenced so it isn't removed.
li.referenced = true;
if (!name.equals(newName)) {
// Give it the short name.
nameNode.setString(newName);
compiler.reportCodeChange();
}
}
}
}
private static void setTargetIfNotDone(final Label label) {
if (!LabelInfo.isDone(label)) {
LabelInfo.setTarget(label);
LabelInfo.setDone(label);
}
}