Method removeItem

kdevplatform/language/duchain/codemodel.cpp:290–349

}

void CodeModel::removeItem(const IndexedString& file, const IndexedQualifiedIdentifier& id)
{
    if (!id.isValid())
        return;

    ifDebug(qCDebug(LANGUAGE) << "removeItem" << file.str() << id.identifier().toString(); )
    CodeModelRepositoryItem item;
    item.file = file;
    CodeModelRequestItem request(item);

    LockedItemRepository::write<CodeModel>([&](CodeModelRepo& repo) {
        uint index = repo.findIndex(item);

        if (index) {
            CodeModelItem searchItem;
            searchItem.id = id;

            DynamicItem<CodeModelRepositoryItem, true> oldItem = repo.dynamicItemFromIndex(index);

            EmbeddedTreeAlgorithms<CodeModelItem, CodeModelItemHandler> alg(oldItem->items(), oldItem->itemsSize(),
                                                                            oldItem->centralFreeItem);

            int listIndex = alg.indexOf(searchItem);
            if (listIndex == -1)
                return;

            auto* items = const_cast<CodeModelItem*>(oldItem->items());

            --items[listIndex].referenceCount;

            if (oldItem->items()[listIndex].referenceCount)
                return; // Nothing to remove, there's still a reference-count left

            // We have reduced the reference-count to zero, so remove the item from the list

            EmbeddedTreeRemoveItem<CodeModelItem, CodeModelItemHandler> remove(items, oldItem->itemsSize(),
                                                                               oldItem->centralFreeItem, searchItem);

            uint newItemCount = remove.newItemCount();
            if (newItemCount != oldItem->itemsSize()) {
                if (newItemCount == 0) {
                    // Has become empty, delete the item
                    repo.deleteItem(index);

                    return;
                } else {
                    // Make smaller
                    item.itemsList().resize(newItemCount);
                    remove.transferData(item.itemsList().data(), item.itemsSize(), &item.centralFreeItem);

                    // Delete the old list
                    repo.deleteItem(index);
                    // Add the new list
                    repo.index(request);
                    return;
                }
            }
        }