cpptoolseditorsupport.cpp 20.4 KB
Newer Older
hjk's avatar
hjk committed
1
/****************************************************************************
con's avatar
con committed
2
**
3
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
hjk's avatar
hjk committed
4
** Contact: http://www.qt-project.org/legal
con's avatar
con committed
5
**
hjk's avatar
hjk committed
6
** This file is part of Qt Creator.
con's avatar
con committed
7
**
hjk's avatar
hjk committed
8 9 10 11 12 13 14
** 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 Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
15
**
16
** GNU Lesser General Public License Usage
hjk's avatar
hjk committed
17 18 19 20 21 22 23 24 25
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
con's avatar
con committed
26 27
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
hjk's avatar
hjk committed
28
****************************************************************************/
con's avatar
con committed
29

30
#include "cppcodemodelsettings.h"
31
#include "cppcompletionassistprovider.h"
32
#include "cpptoolseditorsupport.h"
33
#include "cpptoolsplugin.h"
con's avatar
con committed
34
#include "cppmodelmanager.h"
35 36
#include "cpplocalsymbols.h"

37 38
#include <coreplugin/editormanager/editormanager.h>

39
#include <utils/qtcassert.h>
40
#include <utils/runextensions.h>
con's avatar
con committed
41

42 43 44
#include <QList>
#include <QMutexLocker>
#include <QTextBlock>
45
#include <QTimer>
con's avatar
con committed
46

47
using namespace CppTools;
con's avatar
con committed
48
using namespace CppTools::Internal;
Roberto Raggi's avatar
Roberto Raggi committed
49
using namespace CPlusPlus;
50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79
using namespace TextEditor;

namespace {
class FunctionDefinitionUnderCursor: protected ASTVisitor
{
    unsigned _line;
    unsigned _column;
    DeclarationAST *_functionDefinition;

public:
    FunctionDefinitionUnderCursor(TranslationUnit *translationUnit)
        : ASTVisitor(translationUnit),
          _line(0), _column(0)
    { }

    DeclarationAST *operator()(AST *ast, unsigned line, unsigned column)
    {
        _functionDefinition = 0;
        _line = line;
        _column = column;
        accept(ast);
        return _functionDefinition;
    }

protected:
    virtual bool preVisit(AST *ast)
    {
        if (_functionDefinition)
            return false;

80
        if (FunctionDefinitionAST *def = ast->asFunctionDefinition())
81 82
            return checkDeclaration(def);

83
        if (ObjCMethodDeclarationAST *method = ast->asObjCMethodDeclaration()) {
84 85 86 87 88 89 90 91 92 93 94 95 96 97
            if (method->function_body)
                return checkDeclaration(method);
        }

        return true;
    }

private:
    bool checkDeclaration(DeclarationAST *ast)
    {
        unsigned startLine, startColumn;
        unsigned endLine, endColumn;
        getTokenStartPosition(ast->firstToken(), &startLine, &startColumn);
        getTokenEndPosition(ast->lastToken() - 1, &endLine, &endColumn);
Roberto Raggi's avatar
Roberto Raggi committed
98

99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117
        if (_line > startLine || (_line == startLine && _column >= startColumn)) {
            if (_line < endLine || (_line == endLine && _column < endColumn)) {
                _functionDefinition = ast;
                return false;
            }
        }

        return true;
    }
};

} // anonymous namespace

CppEditorSupport::CppEditorSupport(CppModelManager *modelManager, BaseTextEditor *textEditor)
    : QObject(modelManager)
    , m_modelManager(modelManager)
    , m_textEditor(textEditor)
    , m_updateDocumentInterval(UpdateDocumentDefaultInterval)
    , m_revision(0)
Erik Verbruggen's avatar
Erik Verbruggen committed
118
    , m_editorVisible(textEditor->widget()->isVisible())
119
    , m_cachedContentsEditorRevision(-1)
120
    , m_fileIsBeingReloaded(false)
121 122
    , m_initialized(false)
    , m_lastHighlightRevision(0)
123
    , m_highlightingSupport(modelManager->highlightingSupport(textEditor))
124
    , m_completionAssistProvider(m_modelManager->completionAssistProvider(textEditor))
con's avatar
con committed
125
{
126 127 128
    connect(m_modelManager, SIGNAL(documentUpdated(CPlusPlus::Document::Ptr)),
            this, SLOT(onDocumentUpdated(CPlusPlus::Document::Ptr)));

129 130 131 132 133
    if (m_highlightingSupport && m_highlightingSupport->requiresSemanticInfo()) {
        connect(this, SIGNAL(semanticInfoUpdated(CppTools::SemanticInfo)),
                this, SLOT(startHighlighting()));
    }

134 135 136 137
    m_updateDocumentTimer = new QTimer(this);
    m_updateDocumentTimer->setSingleShot(true);
    m_updateDocumentTimer->setInterval(m_updateDocumentInterval);
    connect(m_updateDocumentTimer, SIGNAL(timeout()), this, SLOT(updateDocumentNow()));
138

139 140 141 142 143 144 145 146 147
    m_updateEditorTimer = new QTimer(this);
    m_updateEditorTimer->setInterval(UpdateEditorInterval);
    m_updateEditorTimer->setSingleShot(true);
    connect(m_updateEditorTimer, SIGNAL(timeout()),
            this, SLOT(updateEditorNow()));

    connect(m_textEditor, SIGNAL(contentsChanged()), this, SLOT(updateDocument()));
    connect(this, SIGNAL(diagnosticsChanged()), this, SLOT(onDiagnosticsChanged()));

148 149
    connect(m_textEditor->document(), SIGNAL(mimeTypeChanged()),
            this, SLOT(onMimeTypeChanged()));
150

151 152 153 154 155
    connect(m_textEditor->document(), SIGNAL(aboutToReload()),
            this, SLOT(onAboutToReload()));
    connect(m_textEditor->document(), SIGNAL(reloadFinished(bool)),
            this, SLOT(onReloadFinished()));

Erik Verbruggen's avatar
Erik Verbruggen committed
156 157 158 159 160 161 162
    connect(Core::EditorManager::instance(), SIGNAL(currentEditorChanged(Core::IEditor *)),
            this, SLOT(onCurrentEditorChanged()));
    m_editorGCTimer = new QTimer(this);
    m_editorGCTimer->setSingleShot(true);
    m_editorGCTimer->setInterval(EditorHiddenGCTimeout);
    connect(m_editorGCTimer, SIGNAL(timeout()), this, SLOT(releaseResources()));

163
    updateDocument();
con's avatar
con committed
164 165 166
}

CppEditorSupport::~CppEditorSupport()
167
{
168
    m_documentParser.cancel();
169 170 171 172 173 174
    m_highlighter.cancel();
    m_futureSemanticInfo.cancel();

    m_highlighter.waitForFinished();
    m_futureSemanticInfo.waitForFinished();
}
con's avatar
con committed
175

176 177
QString CppEditorSupport::fileName() const
{
178
    return m_textEditor->document()->filePath();
179
}
con's avatar
con committed
180

181
QByteArray CppEditorSupport::contents() const
con's avatar
con committed
182
{
183 184
    QMutexLocker locker(&m_cachedContentsLock);

185
    const int editorRev = editorRevision();
186
    if (m_cachedContentsEditorRevision != editorRev && !m_fileIsBeingReloaded) {
187
        m_cachedContentsEditorRevision = editorRev;
188
        m_cachedContents = m_textEditor->textDocument()->contents().toUtf8();
189
    }
con's avatar
con committed
190

191 192
    return m_cachedContents;
}
Roberto Raggi's avatar
Roberto Raggi committed
193

194 195 196
unsigned CppEditorSupport::editorRevision() const
{
    return m_textEditor->editorWidget()->document()->revision();
con's avatar
con committed
197 198
}

199 200
void CppEditorSupport::setExtraDiagnostics(const QString &key,
                                           const QList<Document::DiagnosticMessage> &messages)
con's avatar
con committed
201
{
202 203 204 205
    {
        QMutexLocker locker(&m_diagnosticsMutex);
        m_allDiagnostics.insert(key, messages);
    }
con's avatar
con committed
206

207
    emit diagnosticsChanged();
con's avatar
con committed
208 209
}

210 211 212 213 214 215 216
void CppEditorSupport::setIfdefedOutBlocks(const QList<BlockRange> &ifdefedOutBlocks)
{
    m_editorUpdates.ifdefedOutBlocks = ifdefedOutBlocks;

    emit diagnosticsChanged();
}

217 218 219 220 221
bool CppEditorSupport::initialized()
{
    return m_initialized;
}

222
SemanticInfo CppEditorSupport::recalculateSemanticInfo(bool emitSignalWhenFinished)
223
{
224
    m_futureSemanticInfo.cancel();
225

226 227 228
    SemanticInfo::Source source = currentSource(false);
    recalculateSemanticInfoNow(source, emitSignalWhenFinished);
    return m_lastSemanticInfo;
229 230
}

231 232 233 234 235 236 237
Document::Ptr CppEditorSupport::lastSemanticInfoDocument() const
{
    QMutexLocker locker(&m_lastSemanticInfoLock);

    return m_lastSemanticInfo.doc;
}

238 239
void CppEditorSupport::recalculateSemanticInfoDetached(bool force)
{
240 241 242 243 244
    // Block premature calculation caused by CppEditorPlugin::currentEditorChanged
    // when the editor is created.
    if (!m_initialized)
        return;

245 246 247 248
    m_futureSemanticInfo.cancel();
    SemanticInfo::Source source = currentSource(force);
    m_futureSemanticInfo = QtConcurrent::run<CppEditorSupport, void>(
                &CppEditorSupport::recalculateSemanticInfoDetached_helper, this, source);
con's avatar
con committed
249

250
    if (force && m_highlightingSupport && !m_highlightingSupport->requiresSemanticInfo())
251 252
        startHighlighting();
}
con's avatar
con committed
253

254 255
CppCompletionAssistProvider *CppEditorSupport::completionAssistProvider() const
{
256
    return m_completionAssistProvider;
257 258
}

259 260 261 262
QSharedPointer<SnapshotUpdater> CppEditorSupport::snapshotUpdater()
{
    QSharedPointer<SnapshotUpdater> updater = m_snapshotUpdater;
    if (!updater) {
Orgad Shaneh's avatar
Orgad Shaneh committed
263
        updater = QSharedPointer<SnapshotUpdater>(new SnapshotUpdater(fileName()));
264
        m_snapshotUpdater = updater;
265 266 267

        QSharedPointer<CppCodeModelSettings> cms = CppToolsPlugin::instance()->codeModelSettings();
        updater->setUsePrecompiledHeaders(cms->pchUsage() != CppCodeModelSettings::PchUse_None);
268 269 270 271
    }
    return updater;
}

con's avatar
con committed
272
void CppEditorSupport::updateDocument()
Roberto Raggi's avatar
Roberto Raggi committed
273
{
274
    m_revision = editorRevision();
275

276 277
    if (qobject_cast<BaseTextEditorWidget*>(m_textEditor->widget()) != 0)
        m_updateEditorTimer->stop();
Roberto Raggi's avatar
Roberto Raggi committed
278

279
    m_updateDocumentTimer->start(m_updateDocumentInterval);
Roberto Raggi's avatar
Roberto Raggi committed
280
}
con's avatar
con committed
281

282
static void parse(QFutureInterface<void> &future, QSharedPointer<SnapshotUpdater> updater)
283 284
{
    future.setProgressRange(0, 1);
285 286 287 288
    if (future.isCanceled()) {
        future.setProgressValue(1);
        return;
    }
289 290 291

    CppModelManager *cmm = qobject_cast<CppModelManager *>(CppModelManager::instance());
    updater->update(cmm->workingCopy());
292
    cmm->finishedRefreshingSourceFiles(QStringList(updater->fileInEditor()));
293 294 295 296

    future.setProgressValue(1);
}

con's avatar
con committed
297 298
void CppEditorSupport::updateDocumentNow()
{
299 300 301 302 303
    if (m_documentParser.isRunning() || m_revision != editorRevision()) {
        m_updateDocumentTimer->start(m_updateDocumentInterval);
    } else {
        m_updateDocumentTimer->stop();

304
        if (m_fileIsBeingReloaded || fileName().isEmpty())
305 306 307
            return;

        if (m_highlightingSupport && !m_highlightingSupport->requiresSemanticInfo())
308 309
            startHighlighting();

310
        m_documentParser = QtConcurrent::run(&parse, snapshotUpdater());
311 312 313
    }
}

314 315 316 317 318
bool CppEditorSupport::isUpdatingDocument()
{
    return m_updateDocumentTimer->isActive() || m_documentParser.isRunning();
}

319 320 321 322 323 324 325 326 327 328 329 330
void CppEditorSupport::onDocumentUpdated(Document::Ptr doc)
{
    if (doc.isNull())
        return;

    if (doc->fileName() != fileName())
        return; // some other document got updated

    if (doc->editorRevision() != editorRevision())
        return; // outdated content, wait for a new document to be parsed

    // Update the ifdeffed-out blocks:
331 332 333 334 335 336 337
    if (m_highlightingSupport && !m_highlightingSupport->hightlighterHandlesIfdefedOutBlocks()) {
        QList<Document::Block> skippedBlocks = doc->skippedBlocks();
        QList<BlockRange> ifdefedOutBlocks;
        ifdefedOutBlocks.reserve(skippedBlocks.size());
        foreach (const Document::Block &block, skippedBlocks)
            ifdefedOutBlocks.append(BlockRange(block.begin(), block.end()));
        setIfdefedOutBlocks(ifdefedOutBlocks);
338 339 340 341 342 343 344 345 346
    }

    if (m_highlightingSupport && !m_highlightingSupport->hightlighterHandlesDiagnostics()) {
        // Update the parser errors/warnings:
        static const QString key = QLatin1String("CppTools.ParserDiagnostics");
        setExtraDiagnostics(key, doc->diagnosticMessages());
    }

    // update semantic info in a future
347
    if (!m_initialized ||
348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364
            (m_textEditor->widget()->isVisible()
             && (m_lastSemanticInfo.doc.isNull()
                 || m_lastSemanticInfo.doc->translationUnit()->ast() == 0
                 || m_lastSemanticInfo.doc->fileName() != fileName()))) {
        m_initialized = true;
        recalculateSemanticInfoDetached(/* force = */ true);
    }

    // notify the editor that the document is updated
    emit documentUpdated();
}

void CppEditorSupport::startHighlighting()
{
    if (!m_highlightingSupport)
        return;

365 366
    // Start highlighting only if the editor is or would be visible
    // (in case another mode is active) in the edit mode.
367
    if (!Core::EditorManager::visibleEditors().contains(m_textEditor))
368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391
        return;

    if (m_highlightingSupport->requiresSemanticInfo()) {
        Snapshot snapshot;
        Document::Ptr doc;
        unsigned revision;
        bool forced;

        {
            QMutexLocker locker(&m_lastSemanticInfoLock);
            snapshot = m_lastSemanticInfo.snapshot;
            doc = m_lastSemanticInfo.doc;
            revision = m_lastSemanticInfo.revision;
            forced = m_lastSemanticInfo.forced;
        }

        if (doc.isNull())
            return;
        if (!forced && m_lastHighlightRevision == revision)
            return;
        m_highlighter.cancel();

        m_highlighter = m_highlightingSupport->highlightingFuture(doc, snapshot);
        m_lastHighlightRevision = revision;
Orgad Shaneh's avatar
Orgad Shaneh committed
392
        emit highlighterStarted(&m_highlighter, m_lastHighlightRevision);
con's avatar
con committed
393
    } else {
394 395 396 397
        static const Document::Ptr dummyDoc;
        static const Snapshot dummySnapshot;
        m_highlighter = m_highlightingSupport->highlightingFuture(dummyDoc, dummySnapshot);
        m_lastHighlightRevision = editorRevision();
Orgad Shaneh's avatar
Orgad Shaneh committed
398
        emit highlighterStarted(&m_highlighter, m_lastHighlightRevision);
399 400 401
    }
}

402
/// \brief This slot puts the new diagnostics into the editorUpdates. This function has to be called
403 404 405 406 407 408 409 410 411 412 413 414
///        on the UI thread.
void CppEditorSupport::onDiagnosticsChanged()
{
    QList<Document::DiagnosticMessage> allDiagnostics;
    {
        QMutexLocker locker(&m_diagnosticsMutex);
        foreach (const QList<Document::DiagnosticMessage> &msgs, m_allDiagnostics.values())
            allDiagnostics.append(msgs);
    }

    if (!m_textEditor)
        return;
Roberto Raggi's avatar
Roberto Raggi committed
415

416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443
    // set up the format for the errors
    QTextCharFormat errorFormat;
    errorFormat.setUnderlineStyle(QTextCharFormat::WaveUnderline);
    errorFormat.setUnderlineColor(Qt::red);

    // set up the format for the warnings.
    QTextCharFormat warningFormat;
    warningFormat.setUnderlineStyle(QTextCharFormat::WaveUnderline);
    warningFormat.setUnderlineColor(Qt::darkYellow);

    QTextDocument *doc = m_textEditor->editorWidget()->document();

    m_editorUpdates.selections.clear();
    foreach (const Document::DiagnosticMessage &m, allDiagnostics) {
        QTextEdit::ExtraSelection sel;
        if (m.isWarning())
            sel.format = warningFormat;
        else
            sel.format = errorFormat;

        QTextCursor c(doc->findBlockByNumber(m.line() - 1));
        const QString text = c.block().text();
        if (m.length() > 0 && m.column() + m.length() < (unsigned)text.size()) {
            int column = m.column() > 0 ? m.column() - 1 : 0;
            c.setPosition(c.position() + column);
            c.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor, m.length());
        } else {
            for (int i = 0; i < text.size(); ++i) {
444
                if (!text.at(i).isSpace()) {
445 446 447 448 449 450 451 452 453
                    c.setPosition(c.position() + i);
                    break;
                }
            }
            c.movePosition(QTextCursor::EndOfBlock, QTextCursor::KeepAnchor);
        }
        sel.cursor = c;
        sel.format.setToolTip(m.text());
        m_editorUpdates.selections.append(sel);
con's avatar
con committed
454
    }
455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476

    m_editorUpdates.revision = doc->revision();

    updateEditor();
}
void CppEditorSupport::updateEditor()
{
    m_updateEditorTimer->start(UpdateEditorInterval);
}

void CppEditorSupport::updateEditorNow()
{
    if (!m_textEditor)
        return;

    BaseTextEditorWidget *editorWidget = m_textEditor->editorWidget();
    if (editorWidget->document()->revision() != m_editorUpdates.revision)
        return; // outdated

    editorWidget->setExtraSelections(BaseTextEditorWidget::CodeWarningsSelection,
                                     m_editorUpdates.selections);
    editorWidget->setIfdefedOutBlocks(m_editorUpdates.ifdefedOutBlocks);
con's avatar
con committed
477 478
}

Erik Verbruggen's avatar
Erik Verbruggen committed
479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502
void CppEditorSupport::onCurrentEditorChanged()
{
    bool editorVisible = m_textEditor->widget()->isVisible();

    if (m_editorVisible != editorVisible) {
        m_editorVisible = editorVisible;
        if (editorVisible) {
            m_editorGCTimer->stop();
            QMutexLocker locker(&m_lastSemanticInfoLock);
            if (!m_lastSemanticInfo.doc)
                updateDocumentNow();
        } else {
            m_editorGCTimer->start(EditorHiddenGCTimeout);
        }
    }
}

void CppEditorSupport::releaseResources()
{
    snapshotUpdater()->releaseSnapshot();
    QMutexLocker semanticLocker(&m_lastSemanticInfoLock);
    m_lastSemanticInfo = SemanticInfo();
}

503 504 505 506 507
SemanticInfo::Source CppEditorSupport::currentSource(bool force)
{
    int line = 0, column = 0;
    m_textEditor->convertPosition(m_textEditor->editorWidget()->position(), &line, &column);

508
    const Snapshot snapshot = m_snapshotUpdater->snapshot();
509

510
    QByteArray code;
511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547
    if (force || m_lastSemanticInfo.revision != editorRevision())
        code = contents(); // get the source code only when needed.

    const unsigned revision = editorRevision();
    SemanticInfo::Source source(snapshot, fileName(), code, line, column, revision, force);
    return source;
}

void CppEditorSupport::recalculateSemanticInfoNow(const SemanticInfo::Source &source,
                                                  bool emitSignalWhenFinished,
                                                  TopLevelDeclarationProcessor *processor)
{
    SemanticInfo semanticInfo;

    {
        QMutexLocker locker(&m_lastSemanticInfoLock);
        semanticInfo.revision = m_lastSemanticInfo.revision;
        semanticInfo.forced = source.force;

        if (!source.force
                && m_lastSemanticInfo.revision == source.revision
                && m_lastSemanticInfo.doc
                && m_lastSemanticInfo.doc->translationUnit()->ast()
                && m_lastSemanticInfo.doc->fileName() == source.fileName) {
            semanticInfo.snapshot = m_lastSemanticInfo.snapshot; // ### TODO: use the new snapshot.
            semanticInfo.doc = m_lastSemanticInfo.doc;
        }
    }

    if (semanticInfo.doc.isNull()) {
        semanticInfo.snapshot = source.snapshot;
        if (source.snapshot.contains(source.fileName)) {
            Document::Ptr doc = source.snapshot.preprocessedDocument(source.code, source.fileName);
            if (processor)
                doc->control()->setTopLevelDeclarationProcessor(processor);
            doc->check();
            semanticInfo.doc = doc;
548 549
        } else {
            return;
550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591
        }
    }

    if (semanticInfo.doc) {
        TranslationUnit *translationUnit = semanticInfo.doc->translationUnit();
        AST * ast = translationUnit->ast();

        FunctionDefinitionUnderCursor functionDefinitionUnderCursor(semanticInfo.doc->translationUnit());
        DeclarationAST *currentFunctionDefinition = functionDefinitionUnderCursor(ast, source.line, source.column);

        const LocalSymbols useTable(semanticInfo.doc, currentFunctionDefinition);
        semanticInfo.revision = source.revision;
        semanticInfo.localUses = useTable.uses;
    }

    {
        QMutexLocker locker(&m_lastSemanticInfoLock);
        m_lastSemanticInfo = semanticInfo;
    }

    if (emitSignalWhenFinished)
        emit semanticInfoUpdated(semanticInfo);
}

void CppEditorSupport::recalculateSemanticInfoDetached_helper(QFutureInterface<void> &future, SemanticInfo::Source source)
{
    class TLDProc: public TopLevelDeclarationProcessor
    {
        QFutureInterface<void> m_theFuture;

    public:
        TLDProc(QFutureInterface<void> &aFuture): m_theFuture(aFuture) {}
        virtual ~TLDProc() {}
        virtual bool processDeclaration(DeclarationAST *ast) {
            Q_UNUSED(ast);
            return m_theFuture.isCanceled();
        }
    };

    TLDProc tldProc(future);
    recalculateSemanticInfoNow(source, true, &tldProc);
}
592 593 594 595 596 597 598 599 600 601 602 603 604 605

void CppEditorSupport::onMimeTypeChanged()
{
    m_highlighter.cancel();
    m_highlighter.waitForFinished();

    m_highlightingSupport.reset(m_modelManager->highlightingSupport(m_textEditor));

    disconnect(this, SIGNAL(semanticInfoUpdated(CppTools::SemanticInfo)),
               this, SLOT(startHighlighting()));
    if (m_highlightingSupport && m_highlightingSupport->requiresSemanticInfo())
        connect(this, SIGNAL(semanticInfoUpdated(CppTools::SemanticInfo)),
                this, SLOT(startHighlighting()));

606 607
    m_completionAssistProvider = m_modelManager->completionAssistProvider(m_textEditor);

608 609
    updateDocumentNow();
}
610 611 612 613 614 615 616 617 618 619 620 621 622

void CppEditorSupport::onAboutToReload()
{
    QTC_CHECK(!m_fileIsBeingReloaded);
    m_fileIsBeingReloaded = true;
}

void CppEditorSupport::onReloadFinished()
{
    QTC_CHECK(m_fileIsBeingReloaded);
    m_fileIsBeingReloaded = false;
    updateDocument();
}