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/*
* KDevelop Generic Code Completion Support
*
* Copyright 2006-2008 Hamish Rodda <rodda@kde.org>
* Copyright 2007-2008 David Nolden <david.nolden.kdevelop@art-master.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef KDEVPLATFORM_CODECOMPLETIONITEMGROUPER_H
#define KDEVPLATFORM_CODECOMPLETIONITEMGROUPER_H
#include "codecompletionmodel.h"
#include "codecompletionitem.h"
#include <language/duchain/duchain.h>
#include <language/duchain/duchainlock.h>
namespace KDevelop {
///Always the last item of a grouping chain: Only inserts the items
struct CodeCompletionItemLastGrouper
{
CodeCompletionItemLastGrouper(QList<QExplicitlySharedDataPointer<CompletionTreeElement>>& tree,
CompletionTreeNode* parent, const QList<CompletionTreeItemPointer>& items)
{
tree.reserve(tree.size() + items.size());
for (auto& item : items) {
item->setParent(parent);
tree << QExplicitlySharedDataPointer<CompletionTreeElement>(item.data());
}
}
};
///Helper class that helps us grouping the completion-list. A chain of groupers can be built, by using NextGrouper.
template <class KeyExtractor, class NextGrouper = CodeCompletionItemLastGrouper>
struct CodeCompletionItemGrouper
{
using KeyType = typename KeyExtractor::KeyType;
CodeCompletionItemGrouper(QList<QExplicitlySharedDataPointer<CompletionTreeElement>>& tree,
CompletionTreeNode* parent, const QList<CompletionTreeItemPointer>& items)
{
using GroupMap = QMap<KeyType, QList<CompletionTreeItemPointer>>;
GroupMap groups;
for (auto& item : items) {
KeyType key = KeyExtractor::extract(item);
typename GroupMap::iterator it = groups.find(key);
if (it == groups.end())
it = groups.insert(key, QList<CompletionTreeItemPointer>());
(*it).append(item);
}
tree.reserve(tree.size() + groups.size());
for (typename GroupMap::const_iterator it = groups.constBegin(); it != groups.constEnd(); ++it) {
QExplicitlySharedDataPointer<CompletionTreeNode> node(new CompletionTreeNode());
node->setParent(parent);
node->role = ( KTextEditor::CodeCompletionModel::ExtraItemDataRoles )KeyExtractor::Role;
node->roleValue = QVariant(it.key());
tree << QExplicitlySharedDataPointer<CompletionTreeElement>(node.data());
NextGrouper nextGrouper(node->children, node.data(), *it);
}
}
};
///Extracts the argument-hint depth from completion-items, to be used in ItemGrouper for grouping by argument-hint depth.
struct ArgumentHintDepthExtractor
{
using KeyType = int;
enum { Role = KTextEditor::CodeCompletionModel::ArgumentHintDepth };
static KeyType extract(const CompletionTreeItemPointer& item)
{
return item->argumentHintDepth();
}
};
struct InheritanceDepthExtractor
{
using KeyType = int;
enum { Role = KTextEditor::CodeCompletionModel::InheritanceDepth };
static KeyType extract(const CompletionTreeItemPointer& item)
{
return item->inheritanceDepth();
}
};
struct SimplifiedAttributesExtractor
{
using KeyType = int;
enum { Role = KTextEditor::CodeCompletionModel::CompletionRole };
static const int groupingProperties;
static KeyType extract(const CompletionTreeItemPointer& item)
{
DUChainReadLocker lock(DUChain::lock());
return item->completionProperties() & groupingProperties;
}
};
}
#endif // KDEVPLATFORM_CODECOMPLETIONITEMGROUPER_H
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