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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#pragma once
#include "projectstorageexceptions.h"
#include "projectstorageids.h"
#include "sourcepath.h"
#include "sourcepathcachetypes.h"
#include "sourcepathview.h"
#include "storagecache.h"
#include <sqlitetransaction.h>
#include <algorithm>
namespace QmlDesigner {
template<typename ProjectStorage, typename Mutex = NonLockingMutex>
class SourcePathCache
{
SourcePathCache(const SourcePathCache &) = default;
SourcePathCache &operator=(const SourcePathCache &) = default;
template<typename Storage, typename M>
friend class SourcePathCache;
public:
SourcePathCache(ProjectStorage &projectStorage)
: m_sourceContextStorageAdapter{projectStorage}
, m_sourceStorageAdapter{projectStorage}
{
populateIfEmpty();
}
SourcePathCache(SourcePathCache &&) = default;
SourcePathCache &operator=(SourcePathCache &&) = default;
void populateIfEmpty()
{
if (m_sourcePathCache.isEmpty()) {
m_sourceContextPathCache.populate();
m_sourcePathCache.populate();
}
}
SourceId sourceId(SourcePathView sourcePath) const
{
Utils::SmallStringView sourceContextPath = sourcePath.directory();
auto sourceContextId = m_sourceContextPathCache.id(sourceContextPath);
Utils::SmallStringView sourceName = sourcePath.name();
return m_sourcePathCache.id({sourceName, sourceContextId});
}
SourceId sourceId(SourceContextId sourceContextId, Utils::SmallStringView sourceName) const
{
return m_sourcePathCache.id({sourceName, sourceContextId});
}
SourceContextId sourceContextId(Utils::SmallStringView sourceContextPath) const
{
Utils::SmallStringView path = sourceContextPath.back() == '/'
? sourceContextPath.mid(0, sourceContextPath.size() - 1)
: sourceContextPath;
return m_sourceContextPathCache.id(path);
}
SourcePath sourcePath(SourceId sourceId) const
{
if (Q_UNLIKELY(!sourceId.isValid()))
throw NoSourcePathForInvalidSourceId();
auto entry = m_sourcePathCache.value(sourceId);
Utils::PathString sourceContextPath = m_sourceContextPathCache.value(entry.sourceContextId);
return SourcePath{sourceContextPath, entry.sourceName};
}
Utils::PathString sourceContextPath(SourceContextId sourceContextId) const
{
if (Q_UNLIKELY(!sourceContextId.isValid()))
throw NoSourceContextPathForInvalidSourceContextId();
return m_sourceContextPathCache.value(sourceContextId);
}
SourceContextId sourceContextId(SourceId sourceId) const
{
if (Q_UNLIKELY(!sourceId.isValid()))
throw NoSourcePathForInvalidSourceId();
return m_sourcePathCache.value(sourceId).sourceContextId;
}
private:
class SourceContextStorageAdapter
{
public:
auto fetchId(const Utils::SmallStringView sourceContextPath)
{
return storage.fetchSourceContextId(sourceContextPath);
}
auto fetchValue(SourceContextId id) { return storage.fetchSourceContextPath(id); }
auto fetchAll() { return storage.fetchAllSourceContexts(); }
ProjectStorage &storage;
};
class SourceStorageAdapter
{
public:
auto fetchId(Cache::SourceNameView sourceNameView)
{
return storage.fetchSourceId(sourceNameView.sourceContextId, sourceNameView.sourceName);
}
auto fetchValue(SourceId id)
{
auto entry = storage.fetchSourceNameAndSourceContextId(id);
return Cache::SourceNameEntry{std::move(entry.sourceName), entry.sourceContextId};
}
auto fetchAll() { return storage.fetchAllSources(); }
ProjectStorage &storage;
};
static bool sourceContextLess(Utils::SmallStringView first, Utils::SmallStringView second) noexcept
{
return Utils::reverseCompare(first, second) < 0;
}
static bool sourceLess(Cache::SourceNameView first, Cache::SourceNameView second) noexcept
{
return first < second;
}
using SourceContextPathCache = StorageCache<Utils::PathString,
Utils::SmallStringView,
SourceContextId,
SourceContextStorageAdapter,
Mutex,
sourceContextLess,
Cache::SourceContext>;
using SourceNameCache = StorageCache<Cache::SourceNameEntry,
Cache::SourceNameView,
SourceId,
SourceStorageAdapter,
Mutex,
sourceLess,
Cache::Source>;
private:
SourceContextStorageAdapter m_sourceContextStorageAdapter;
SourceStorageAdapter m_sourceStorageAdapter;
mutable SourceContextPathCache m_sourceContextPathCache{m_sourceContextStorageAdapter};
mutable SourceNameCache m_sourcePathCache{m_sourceStorageAdapter};
};
} // namespace QmlDesigner
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