use of org.eclipse.emf.ecore.change.ListChange in project xtext-core by eclipse.
the class PartialSerializer method trySerializeMultiValue.
protected List<SerializationStrategy> trySerializeMultiValue(EObject owner, FeatureChange change, IEObjectRegion ownerRegion, IConstraint constraint) {
EStructuralFeature feature = change.getFeature();
List<SerializationStrategy> result = Lists.newArrayList();
IFeatureInfo featureInfo = constraint.getFeatures()[owner.eClass().getFeatureID(feature)];
List<IConstraintElement> assignments = featureInfo.getAssignments();
if (assignments.size() != 1) {
return null;
}
IConstraintElement assignment = assignments.get(0);
if (!assignment.isMany()) {
return null;
}
List<IAstRegion> originals = findRegions(ownerRegion, change);
EList<ListChange> listChanges = change.getListChanges();
if (listChanges.isEmpty() && originals.isEmpty()) {
ISerializationContext ctx = getSerializationContext(owner);
AbstractElement ins = assignment.getGrammarElement();
IHiddenRegion insertAt = insertionPointFinder.findInsertionPoint(ctx, ownerRegion, ins);
if (insertAt == null) {
return null;
}
for (Object value : (List<?>) owner.eGet(feature)) {
EObject obj = (EObject) value;
ISerializationContext context = getSerializationContext(obj);
result.add(new SerializeRecursiveStrategy(insertAt, obj, context));
}
return result;
}
// ListTransient listTransient = transientValues.isListTransient(owner, feature);
List<Object> modifying = Lists.newArrayList(((List<?>) owner.eGet(feature)));
for (ListChange lc : listChanges) {
ChangeKind kind = lc.getKind();
if (kind == ADD_LITERAL) {
IAstRegion region = originals.get(lc.getIndex());
result.add(new DeleteRegionStrategy(region));
} else if (kind == MOVE_LITERAL || kind == REMOVE_LITERAL) {
if (originals.isEmpty()) {
return null;
}
int index = lc.getIndex();
IHiddenRegion insertAt;
if (index >= originals.size()) {
insertAt = ((ISequentialRegion) originals.get(originals.size() - 1)).getNextHiddenRegion();
} else {
insertAt = ((ISequentialRegion) originals.get(index)).getPreviousHiddenRegion();
}
EObject value = (EObject) modifying.get(index);
modifying.remove(index);
if (kind == REMOVE_LITERAL) {
ISerializationContext context = getSerializationContext(value);
result.add(new SerializeRecursiveStrategy(insertAt, value, context));
} else if (kind == ChangeKind.MOVE_LITERAL) {
int moveToIndex = lc.getMoveToIndex();
IAstRegion source = originals.get(moveToIndex);
result.add(new DeleteRegionStrategy(source));
result.add(new InsertRegionStrategy(insertAt, source));
}
}
}
return result;
}
use of org.eclipse.emf.ecore.change.ListChange in project xtext-core by eclipse.
the class PartialSerializer method findRegions.
protected List<IAstRegion> findRegions(IEObjectRegion owner, FeatureChange change) {
EStructuralFeature feature = change.getFeature();
if (feature instanceof EReference && ((EReference) feature).isContainment()) {
ITextRegionAccess access = owner.getTextRegionAccess();
Set<EObject> children = Sets.newHashSet();
for (ListChange lc : change.getListChanges()) {
children.addAll(lc.getReferenceValues());
}
for (Object obj : (List<?>) owner.getSemanticElement().eGet(feature)) {
children.add((EObject) obj);
}
List<IEObjectRegion> result = Lists.newArrayList();
for (EObject obj : children) {
IEObjectRegion region = access.regionForEObject(obj);
if (region != null) {
result.add(region);
}
}
Collections.sort(result, (a, b) -> a.getOffset() - b.getOffset());
return ImmutableList.copyOf(result);
} else {
return ImmutableList.copyOf(owner.getRegionFor().features(feature));
}
}
Aggregations