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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "documentcontentcompletion.h"
#include "assistinterface.h"
#include "assistproposalitem.h"
#include "asyncprocessor.h"
#include "genericproposal.h"
#include "iassistprocessor.h"
#include "../snippets/snippetassistcollector.h"
#include "../completionsettings.h"
#include "../texteditorsettings.h"
#include <utils/algorithm.h>
#include <QElapsedTimer>
#include <QRegularExpression>
#include <QSet>
#include <QTextBlock>
#include <QTextDocument>
using namespace TextEditor;
class DocumentContentCompletionProcessor final : public AsyncProcessor
{
public:
DocumentContentCompletionProcessor(const QString &snippetGroupId);
~DocumentContentCompletionProcessor() final;
IAssistProposal *performAsync() override;
private:
QString m_snippetGroup;
};
DocumentContentCompletionProvider::DocumentContentCompletionProvider(const QString &snippetGroup)
: m_snippetGroup(snippetGroup)
{ }
IAssistProcessor *DocumentContentCompletionProvider::createProcessor(const AssistInterface *) const
{
return new DocumentContentCompletionProcessor(m_snippetGroup);
}
DocumentContentCompletionProcessor::DocumentContentCompletionProcessor(const QString &snippetGroupId)
: m_snippetGroup(snippetGroupId)
{ }
DocumentContentCompletionProcessor::~DocumentContentCompletionProcessor()
{
cancel();
}
IAssistProposal *DocumentContentCompletionProcessor::performAsync()
{
int pos = interface()->position();
QChar chr;
// Skip to the start of a name
do {
chr = interface()->characterAt(--pos);
} while (chr.isLetterOrNumber() || chr == '_');
++pos;
int length = interface()->position() - pos;
if (interface()->reason() == IdleEditor) {
QChar characterUnderCursor = interface()->characterAt(interface()->position());
if (characterUnderCursor.isLetterOrNumber()
|| length < TextEditorSettings::completionSettings().m_characterThreshold) {
return nullptr;
}
}
const TextEditor::SnippetAssistCollector snippetCollector(
m_snippetGroup, QIcon(":/texteditor/images/snippet.png"));
QList<AssistProposalItemInterface *> items = snippetCollector.collect();
const QString wordUnderCursor = interface()->textAt(pos, length);
const QString text = interface()->textDocument()->toPlainText();
const QRegularExpression wordRE("([\\p{L}_][\\p{L}0-9_]{2,})");
QSet<QString> words;
QRegularExpressionMatchIterator it = wordRE.globalMatch(text);
int wordUnderCursorFound = 0;
while (it.hasNext()) {
if (isCanceled())
return nullptr;
QRegularExpressionMatch match = it.next();
const QString &word = match.captured();
if (word == wordUnderCursor) {
// Only add the word under cursor if it
// already appears elsewhere in the text
if (++wordUnderCursorFound < 2)
continue;
}
if (!words.contains(word)) {
auto item = new AssistProposalItem();
item->setText(word);
items.append(item);
words.insert(word);
}
}
return new GenericProposal(pos, items);
}
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