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/****************************************************************************
**
** Copyright (C) 2016 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.
**
****************************************************************************/
#include "semantichighlighter.h"
#include <texteditor/fontsettings.h>
#include <texteditor/semantichighlighter.h>
#include <texteditor/syntaxhighlighter.h>
#include <texteditor/textdocument.h>
#include <utils/qtcassert.h>
#include <QLoggingCategory>
#include <QTextDocument>
using namespace TextEditor;
using SemanticHighlighter::incrementalApplyExtraAdditionalFormats;
using SemanticHighlighter::clearExtraAdditionalFormatsUntilEnd;
static Q_LOGGING_CATEGORY(log, "qtc.cpptools.semantichighlighter")
namespace CppTools {
SemanticHighlighter::SemanticHighlighter(TextDocument *baseTextDocument)
: QObject(baseTextDocument)
, m_baseTextDocument(baseTextDocument)
, m_revision(0)
{
QTC_CHECK(m_baseTextDocument);
updateFormatMapFromFontSettings();
}
SemanticHighlighter::~SemanticHighlighter()
{
if (m_watcher) {
disconnectWatcher();
m_watcher->cancel();
m_watcher->waitForFinished();
}
}
void SemanticHighlighter::setHighlightingRunner(HighlightingRunner highlightingRunner)
{
m_highlightingRunner = highlightingRunner;
}
void SemanticHighlighter::run()
{
QTC_ASSERT(m_highlightingRunner, return);
qCDebug(log) << "SemanticHighlighter: run()";
if (m_watcher) {
disconnectWatcher();
m_watcher->cancel();
}
m_watcher.reset(new QFutureWatcher<HighlightingResult>);
connectWatcher();
m_revision = documentRevision();
m_watcher->setFuture(m_highlightingRunner());
}
void SemanticHighlighter::onHighlighterResultAvailable(int from, int to)
{
if (documentRevision() != m_revision)
return; // outdated
else if (!m_watcher || m_watcher->isCanceled())
return; // aborted
qCDebug(log) << "onHighlighterResultAvailable()" << from << to;
SyntaxHighlighter *highlighter = m_baseTextDocument->syntaxHighlighter();
QTC_ASSERT(highlighter, return);
incrementalApplyExtraAdditionalFormats(highlighter, m_watcher->future(), from, to, m_formatMap);
}
void SemanticHighlighter::onHighlighterFinished()
{
QTC_ASSERT(m_watcher, return);
if (!m_watcher->isCanceled() && documentRevision() == m_revision) {
SyntaxHighlighter *highlighter = m_baseTextDocument->syntaxHighlighter();
if (QTC_GUARD(highlighter)) {
qCDebug(log) << "onHighlighterFinished() - clearing formats";
clearExtraAdditionalFormatsUntilEnd(highlighter, m_watcher->future());
}
}
m_watcher.reset();
}
void SemanticHighlighter::connectWatcher()
{
typedef QFutureWatcher<HighlightingResult> Watcher;
connect(m_watcher.data(), &Watcher::resultsReadyAt,
this, &SemanticHighlighter::onHighlighterResultAvailable);
connect(m_watcher.data(), &Watcher::finished,
this, &SemanticHighlighter::onHighlighterFinished);
}
void SemanticHighlighter::disconnectWatcher()
{
typedef QFutureWatcher<HighlightingResult> Watcher;
disconnect(m_watcher.data(), &Watcher::resultsReadyAt,
this, &SemanticHighlighter::onHighlighterResultAvailable);
disconnect(m_watcher.data(), &Watcher::finished,
this, &SemanticHighlighter::onHighlighterFinished);
}
unsigned SemanticHighlighter::documentRevision() const
{
return m_baseTextDocument->document()->revision();
}
void SemanticHighlighter::updateFormatMapFromFontSettings()
{
QTC_ASSERT(m_baseTextDocument, return);
const FontSettings &fs = m_baseTextDocument->fontSettings();
m_formatMap[TypeUse] = fs.toTextCharFormat(C_TYPE);
m_formatMap[LocalUse] = fs.toTextCharFormat(C_LOCAL);
m_formatMap[FieldUse] = fs.toTextCharFormat(C_FIELD);
m_formatMap[EnumerationUse] = fs.toTextCharFormat(C_ENUMERATION);
m_formatMap[VirtualMethodUse] = fs.toTextCharFormat(C_VIRTUAL_METHOD);
m_formatMap[LabelUse] = fs.toTextCharFormat(C_LABEL);
m_formatMap[MacroUse] = fs.toTextCharFormat(C_PREPROCESSOR);
m_formatMap[FunctionUse] = fs.toTextCharFormat(C_FUNCTION);
m_formatMap[PseudoKeywordUse] = fs.toTextCharFormat(C_KEYWORD);
m_formatMap[StringUse] = fs.toTextCharFormat(C_STRING);
}
} // namespace CppTools
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