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/*
SPDX-FileCopyrightText: 2008 David Nolden <david.nolden.kdevelop@art-master.de>
SPDX-License-Identifier: LGPL-2.0-only
*/
#include "importers.h"
#include "declarationid.h"
#include "duchainpointer.h"
#include "serialization/itemrepository.h"
#include "topducontext.h"
namespace KDevelop {
DEFINE_LIST_MEMBER_HASH(ImportersItem, importers, IndexedDUContext)
class ImportersItem
{
public:
ImportersItem()
{
initializeAppendedLists();
}
ImportersItem(const ImportersItem& rhs, bool dynamic = true) : declaration(rhs.declaration)
{
initializeAppendedLists(dynamic);
copyListsFrom(rhs);
}
~ImportersItem()
{
freeAppendedLists();
}
ImportersItem& operator=(const ImportersItem& rhs) = delete;
unsigned int hash() const
{
//We only compare the declaration. This allows us implementing a map, although the item-repository
//originally represents a set.
return declaration.hash();
}
unsigned int itemSize() const
{
return dynamicSize();
}
uint classSize() const
{
return sizeof(ImportersItem);
}
DeclarationId declaration;
START_APPENDED_LISTS(ImportersItem);
APPENDED_LIST_FIRST(ImportersItem, IndexedDUContext, importers);
END_APPENDED_LISTS(ImportersItem, importers);
};
class ImportersRequestItem
{
public:
ImportersRequestItem(const ImportersItem& item) : m_item(item)
{
}
enum {
AverageSize = 30 //This should be the approximate average size of an Item
};
unsigned int hash() const
{
return m_item.hash();
}
uint itemSize() const
{
return m_item.itemSize();
}
void createItem(ImportersItem* item) const
{
new (item) ImportersItem(m_item, false);
}
static void destroy(ImportersItem* item, KDevelop::AbstractItemRepository&)
{
item->~ImportersItem();
}
static bool persistent(const ImportersItem* /*item*/)
{
return true;
}
bool equals(const ImportersItem* item) const
{
return m_item.declaration == item->declaration;
}
const ImportersItem& m_item;
};
// Maps declaration-ids to Importers
using ImportersRepo = ItemRepository<ImportersItem, ImportersRequestItem>;
template<>
class ItemRepositoryFor<Importers>
{
friend struct LockedItemRepository;
static ImportersRepo& repo()
{
static QMutex mutex;
static ImportersRepo repo { QStringLiteral("Importer Map"), &mutex };
return repo;
}
};
Importers::Importers()
{
LockedItemRepository::initialize<Importers>();
}
void Importers::addImporter(const DeclarationId& id, const IndexedDUContext& use)
{
ImportersItem item;
item.declaration = id;
item.importersList().append(use);
ImportersRequestItem request(item);
LockedItemRepository::write<Importers>([&](ImportersRepo& repo) {
uint index = repo.findIndex(item);
if (index) {
// Check whether the item is already in the mapped list, else copy the list into the new created item
const ImportersItem* oldItem = repo.itemFromIndex(index);
for (unsigned int a = 0; a < oldItem->importersSize(); ++a) {
if (oldItem->importers()[a] == use)
return; // Already there
item.importersList().append(oldItem->importers()[a]);
}
repo.deleteItem(index);
}
// This inserts the changed item
repo.index(request);
});
}
void Importers::removeImporter(const DeclarationId& id, const IndexedDUContext& use)
{
ImportersItem item;
item.declaration = id;
ImportersRequestItem request(item);
LockedItemRepository::write<Importers>([&](ImportersRepo& repo) {
uint index = repo.findIndex(item);
if (index) {
// Check whether the item is already in the mapped list, else copy the list into the new created item
const ImportersItem* oldItem = repo.itemFromIndex(index);
for (unsigned int a = 0; a < oldItem->importersSize(); ++a)
if (!(oldItem->importers()[a] == use))
item.importersList().append(oldItem->importers()[a]);
repo.deleteItem(index);
Q_ASSERT(repo.findIndex(item) == 0);
// This inserts the changed item
if (item.importersSize() != 0)
repo.index(request);
}
});
}
KDevVarLengthArray<IndexedDUContext> Importers::importers(const DeclarationId& id) const
{
KDevVarLengthArray<IndexedDUContext> ret;
ImportersItem item;
item.declaration = id;
ImportersRequestItem request(item);
LockedItemRepository::read<Importers>([&](const ImportersRepo& repo) {
uint index = repo.findIndex(item);
if (index) {
const ImportersItem* repositoryItem = repo.itemFromIndex(index);
FOREACH_FUNCTION(const IndexedDUContext& decl, repositoryItem->importers)
ret.append(decl);
}
});
return ret;
}
Importers& Importers::self()
{
static Importers globalImporters;
return globalImporters;
}
}
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