/**
* Checks whether adding the resource section to map is possible.
*
* @return {@link RangeAdder} object that can be used to perform "add" operation; not null
* @throws CannotAddException if resource section overlaps with already registered section
*/
private RangeAdder checkCanAddRange(ResourceSection section) throws CannotAddException {
final VmResourceId resourceId = section.getResourceId();
final ResourceData data = resourceIdToData.get(resourceId);
final Range range = Range.create(section);
if (data != null) {
data.checkCanAddRange(range);
}
return new RangeAdder() {
/** Commits 'add' operation. No conflicts are expected at this stage. */
public RangeDeleter commit(TextSectionMapping mapTable, VmResourceId destinationResource) {
ResourceData commitData = resourceIdToData.get(resourceId);
if (commitData == null) {
commitData = new ResourceData();
resourceIdToData.put(resourceId, commitData);
}
final ResourceData commitDataFinal = commitData;
commitDataFinal.addRange(range, mapTable, destinationResource);
return new RangeDeleter() {
public void delete() {
commitDataFinal.removeRange(range);
if (commitDataFinal.isEmpty()) {
resourceIdToData.remove(resourceId);
}
}
};
}
};
}
SourcePosition transformImpl(VmResourceId id, int line, int column) {
ResourceData resourceData = resourceIdToData.get(id);
if (resourceData != null) {
TextPoint originalPoint = new TextPoint(line, column);
SourcePosition resultPosition = resourceData.transform(originalPoint, direction);
if (resultPosition != null) {
return resultPosition;
}
}
return new SourcePosition(id, line, column);
}