Merge remote-tracking branch 'origin/master' into 4.2

Change-Id: I96904f9c65b6c25bb4e04ca34e2d1acb27b8dd58

doc/src/projects/creator-projects-custom-wizards-json.qdoc

@@ -824,6 +824,9 @@
             For example, to turn the first character in the line edit to upper
             case.
 
+        \li \c isPassword is a boolean value that specifies that the line edit
+            contains a password, which will be masked.
+
     \endlist
 
     \section2 Path Chooser

qbs/modules/qtc/qtc.qbs

@@ -63,7 +63,8 @@ Module {
         "QT_CREATOR",
         'IDE_LIBRARY_BASENAME="' + libDirName + '"',
         "QT_NO_CAST_TO_ASCII",
-        "QT_RESTRICTED_CAST_FROM_ASCII"
+        "QT_RESTRICTED_CAST_FROM_ASCII",
+        "QT_DISABLE_DEPRECATED_BEFORE=0x050600",
     ].concat(testsEnabled ? ["WITH_TESTS"] : [])
 
     Rule {

qtcreator.pri

@@ -179,7 +179,11 @@ exists($$IDE_LIBRARY_PATH): LIBS *= -L$$IDE_LIBRARY_PATH  # library path from ou
     DEFINES += IDE_LIBRARY_BASENAME=\\\"$$IDE_LIBRARY_BASENAME\\\"
 }
 
-DEFINES += QT_CREATOR QT_NO_CAST_TO_ASCII QT_RESTRICTED_CAST_FROM_ASCII
+DEFINES += \
+    QT_CREATOR \
+    QT_NO_CAST_TO_ASCII \
+    QT_RESTRICTED_CAST_FROM_ASCII \
+    QT_DISABLE_DEPRECATED_BEFORE=0x050600
 !macx:DEFINES += QT_USE_FAST_OPERATOR_PLUS QT_USE_FAST_CONCATENATION
 
 unix {

src/libs/clangbackendipc/documentannotationschangedmessage.cpp

@@ -37,6 +37,7 @@ QDebug operator<<(QDebug debug, const DocumentAnnotationsChangedMessage &message
     debug.nospace() << "DocumentAnnotationsChangedMessage("
                     << message.fileContainer()
                     << ", " << message.diagnostics().size()
+                    << ", " << !message.firstHeaderErrorDiagnostic().text().isEmpty()
                     << ", " << message.highlightingMarks().size()
                     << ", " << message.skippedPreprocessorRanges().size()
                     << ")";
@@ -49,6 +50,7 @@ void PrintTo(const DocumentAnnotationsChangedMessage &message, ::std::ostream* o
     *os << "DocumentAnnotationsChangedMessage(";
     PrintTo(message.fileContainer(), os);
     *os << "," << message.diagnostics().size();
+    *os << "," << !message.firstHeaderErrorDiagnostic().text().isEmpty();
     *os << "," << message.highlightingMarks().size();
     *os << "," << message.skippedPreprocessorRanges().size();
     *os << ")";

src/libs/clangbackendipc/documentannotationschangedmessage.h

@@ -41,10 +41,12 @@ public:
     DocumentAnnotationsChangedMessage() = default;
     DocumentAnnotationsChangedMessage(const FileContainer &fileContainer,
                                       const QVector<DiagnosticContainer> &diagnostics,
+                                      const DiagnosticContainer &firstHeaderErrorDiagnostic_,
                                       const QVector<HighlightingMarkContainer> &highlightingMarks,
                                       const QVector<SourceRangeContainer> &skippedPreprocessorRanges)
         : fileContainer_(fileContainer),
           diagnostics_(diagnostics),
+          firstHeaderErrorDiagnostic_(firstHeaderErrorDiagnostic_),
           highlightingMarks_(highlightingMarks),
           skippedPreprocessorRanges_(skippedPreprocessorRanges)
     {
@@ -60,6 +62,11 @@ public:
         return diagnostics_;
     }
 
+    const DiagnosticContainer &firstHeaderErrorDiagnostic() const
+    {
+        return firstHeaderErrorDiagnostic_;
+    }
+
     const QVector<HighlightingMarkContainer> &highlightingMarks() const
     {
         return highlightingMarks_;
@@ -74,6 +81,7 @@ public:
     {
         out << message.fileContainer_;
         out << message.diagnostics_;
+        out << message.firstHeaderErrorDiagnostic_;
         out << message.highlightingMarks_;
         out << message.skippedPreprocessorRanges_;
 
@@ -84,6 +92,7 @@ public:
     {
         in >> message.fileContainer_;
         in >> message.diagnostics_;
+        in >> message.firstHeaderErrorDiagnostic_;
         in >> message.highlightingMarks_;
         in >> message.skippedPreprocessorRanges_;
 
@@ -95,6 +104,7 @@ public:
     {
         return first.fileContainer_ == second.fileContainer_
             && first.diagnostics_ == second.diagnostics_
+            && first.firstHeaderErrorDiagnostic_ == second.firstHeaderErrorDiagnostic_
             && first.highlightingMarks_ == second.highlightingMarks_
             && first.skippedPreprocessorRanges_ == second.skippedPreprocessorRanges_;
     }
@@ -102,6 +112,7 @@ public:
 private:
     FileContainer fileContainer_;
     QVector<DiagnosticContainer> diagnostics_;
+    DiagnosticContainer firstHeaderErrorDiagnostic_;
     QVector<HighlightingMarkContainer> highlightingMarks_;
     QVector<SourceRangeContainer> skippedPreprocessorRanges_;
 };

src/plugins/clangcodemodel/clangbackendipcintegration.cpp

@@ -32,6 +32,7 @@
 
 #include <coreplugin/editormanager/editormanager.h>
 #include <coreplugin/icore.h>
+#include <coreplugin/messagemanager.h>
 
 #include <cpptools/abstracteditorsupport.h>
 #include <cpptools/baseeditordocumentprocessor.h>
@@ -68,6 +69,7 @@
 
 #include <cplusplus/Icons.h>
 
+#include <QDir>
 #include <QElapsedTimer>
 #include <QLoggingCategory>
 #include <QProcess>
@@ -180,7 +182,9 @@ void IpcReceiver::documentAnnotationsChanged(const DocumentAnnotationsChangedMes
         const QString documentProjectPartId = CppTools::CppToolsBridge::projectPartIdForFile(filePath);
         if (projectPartId == documentProjectPartId) {
             const quint32 documentRevision = message.fileContainer().documentRevision();
-            processor->updateCodeWarnings(message.diagnostics(), documentRevision);
+            processor->updateCodeWarnings(message.diagnostics(),
+                                          message.firstHeaderErrorDiagnostic(),
+                                          documentRevision);
             processor->updateHighlighting(message.highlightingMarks(),
                                           message.skippedPreprocessorRanges(),
                                           documentRevision);
@@ -304,10 +308,16 @@ public:
     void updateVisibleTranslationUnits(const UpdateVisibleTranslationUnitsMessage &) override {}
 };
 
+enum { backEndStartTimeOutInMs = 10000 };
+
 IpcCommunicator::IpcCommunicator()
     : m_connection(&m_ipcReceiver)
     , m_ipcSender(new DummyIpcSender)
 {
+    m_backendStartTimeOut.setSingleShot(true);
+    connect(&m_backendStartTimeOut, &QTimer::timeout,
+            this, &IpcCommunicator::logStartTimeOut);
+
     m_ipcReceiver.setAliveHandler([this]() { m_connection.resetProcessAliveTimer(); });
 
     connect(Core::EditorManager::instance(), &Core::EditorManager::editorAboutToClose,
@@ -326,8 +336,11 @@ IpcCommunicator::~IpcCommunicator()
 void IpcCommunicator::initializeBackend()
 {
     const QString clangBackEndProcessPath = backendProcessPath();
+    if (!QFileInfo(clangBackEndProcessPath).exists()) {
+        logExecutableDoesNotExist();
+        return;
+    }
     qCDebug(log) << "Starting" << clangBackEndProcessPath;
-    QTC_ASSERT(QFileInfo(clangBackEndProcessPath).exists(), return);
 
     m_connection.setProcessAliveTimerInterval(30 * 1000);
     m_connection.setProcessPath(clangBackEndProcessPath);
@@ -338,6 +351,7 @@ void IpcCommunicator::initializeBackend()
             this, &IpcCommunicator::setupDummySender);
 
     m_connection.startProcessAndConnectToServerAsynchronously();
+    m_backendStartTimeOut.start(backEndStartTimeOutInMs);
 }
 
 static QStringList projectPartOptions(const CppTools::ProjectPart::Ptr &projectPart)
@@ -622,11 +636,11 @@ void IpcCommunicator::updateUnsavedFile(Core::IDocument *document)
 
 void IpcCommunicator::onConnectedToBackend()
 {
+    m_backendStartTimeOut.stop();
+
     ++m_connectedCount;
-    if (m_connectedCount > 1) {
-        qWarning("Clang back end finished unexpectedly, restarted.");
-        qCDebug(log) << "Backend restarted, re-initializing with project data and unsaved files.";
-    }
+    if (m_connectedCount > 1)
+        logRestartedDueToUnexpectedFinish();
 
     m_ipcReceiver.deleteAndClearWaitingAssistProcessors();
     m_ipcSender.reset(new IpcSender(m_connection));
@@ -645,6 +659,42 @@ void IpcCommunicator::setupDummySender()
     m_ipcSender.reset(new DummyIpcSender);
 }
 
+void IpcCommunicator::logExecutableDoesNotExist()
+{
+    const QString msg
+        = tr("Clang Code Model: Error: "
+             "The clangbackend executable \"%1\" does not exist.")
+                .arg(QDir::toNativeSeparators(backendProcessPath()));
+
+    logError(msg);
+}
+
+void IpcCommunicator::logStartTimeOut()
+{
+    const QString msg
+        = tr("Clang Code Model: Error: "
+             "The clangbackend executable \"%1\" could not be started (timeout after %2ms).")
+                .arg(QDir::toNativeSeparators(backendProcessPath()))
+                .arg(backEndStartTimeOutInMs);
+
+    logError(msg);
+}
+
+void IpcCommunicator::logRestartedDueToUnexpectedFinish()
+{
+    const QString msg
+        = tr("Clang Code Model: Error: "
+             "The clangbackend process has finished unexpectedly and was restarted.");
+
+    logError(msg);
+}
+
+void IpcCommunicator::logError(const QString &text)
+{
+    Core::MessageManager::write(text, Core::MessageManager::Flash);
+    qWarning("%s", qPrintable(text));
+}
+
 void IpcCommunicator::initializeBackendWithCurrentData()
 {
     registerFallbackProjectPart();

src/plugins/clangcodemodel/clangbackendipcintegration.h

@@ -171,12 +171,18 @@ private:
     void onDisconnectedFromBackend();
     void onEditorAboutToClose(Core::IEditor *editor);
 
+    void logExecutableDoesNotExist();
+    void logRestartedDueToUnexpectedFinish();
+    void logStartTimeOut();
+    void logError(const QString &text);
+
     void updateTranslationUnitVisiblity(const Utf8String &currentEditorFilePath,
                                         const Utf8StringVector &visibleEditorsFilePaths);
 
 private:
     IpcReceiver m_ipcReceiver;
     ClangBackEnd::ClangCodeModelConnectionClient m_connection;
+    QTimer m_backendStartTimeOut;
     QScopedPointer<IpcSenderInterface> m_ipcSender;
     int m_connectedCount = 0;
 };

src/plugins/clangcodemodel/clangdiagnosticmanager.cpp

@@ -41,6 +41,7 @@
 #include <utils/proxyaction.h>
 #include <utils/qtcassert.h>
 
+#include <QFileInfo>
 #include <QTextBlock>
 
 namespace  {

src/plugins/clangcodemodel/clangdiagnostictooltipwidget.cpp

@@ -129,9 +129,10 @@ enum IndentType { IndentDiagnostic, DoNotIndentDiagnostic };
 
 QWidget *createDiagnosticLabel(const ClangBackEnd::DiagnosticContainer &diagnostic,
                                const QString &mainFilePath,
-                               IndentType indentType = DoNotIndentDiagnostic)
+                               IndentType indentType = DoNotIndentDiagnostic,
+                               bool enableClickableFixits = true)
 {
-    const bool hasFixit = !diagnostic.fixIts().isEmpty();
+    const bool hasFixit = enableClickableFixits ? !diagnostic.fixIts().isEmpty() : false;
     const QString diagnosticText = diagnostic.text().toString().toHtmlEscaped();
     const QString text = clickableLocation(mainFilePath, diagnostic.location())
                        + QStringLiteral(": ")
@@ -159,15 +160,18 @@ class MainDiagnosticWidget : public QWidget
 {
     Q_OBJECT
 public:
-    MainDiagnosticWidget(const ClangBackEnd::DiagnosticContainer &diagnostic)
+    MainDiagnosticWidget(const ClangBackEnd::DiagnosticContainer &diagnostic,
+                         const ClangCodeModel::Internal::DisplayHints &displayHints)
     {
         setContentsMargins(0, 0, 0, 0);
         auto *mainLayout = createLayout<QVBoxLayout>();
 
+        const ClangBackEnd::SourceLocationContainer location = diagnostic.location();
+
         // Set up header row: category + responsible option
+        if (displayHints.showMainDiagnosticHeader) {
             const QString category = diagnostic.category();
             const QString responsibleOption = diagnostic.enableOption();
-        const ClangBackEnd::SourceLocationContainer location = diagnostic.location();
 
             auto *headerLayout = createLayout<QHBoxLayout>();
             headerLayout->addWidget(new QLabel(wrapInBoldTags(category)), 1);
@@ -175,9 +179,16 @@ public:
             auto *responsibleOptionLabel = new QLabel(wrapInColor(responsibleOption, "gray"));
             headerLayout->addWidget(responsibleOptionLabel, 0);
             mainLayout->addLayout(headerLayout);
+        }
 
         // Set up main row: diagnostic text
-        mainLayout->addWidget(createDiagnosticLabel(diagnostic, location.filePath()));
+        const Utf8String mainFilePath = displayHints.showFileNameInMainDiagnostic
+                ? Utf8String()
+                : location.filePath();
+        mainLayout->addWidget(createDiagnosticLabel(diagnostic,
+                                                    mainFilePath,
+                                                    DoNotIndentDiagnostic,
+                                                    displayHints.enableClickableFixits));
 
         setLayout(mainLayout);
     }
@@ -186,26 +197,35 @@ public:
 void addChildrenToLayout(const QString &mainFilePath,
                          const QVector<ClangBackEnd::DiagnosticContainer>::const_iterator first,
                          const QVector<ClangBackEnd::DiagnosticContainer>::const_iterator last,
+                         bool enableClickableFixits,
                          QLayout &boxLayout)
 {
-    for (auto it = first; it != last; ++it)
-        boxLayout.addWidget(createDiagnosticLabel(*it, mainFilePath, IndentDiagnostic));
+    for (auto it = first; it != last; ++it) {
+        boxLayout.addWidget(createDiagnosticLabel(*it,
+                                                  mainFilePath,
+                                                  IndentDiagnostic,
+                                                  enableClickableFixits));
+    }
 }
 
 void setupChildDiagnostics(const QString &mainFilePath,
                            const QVector<ClangBackEnd::DiagnosticContainer> &diagnostics,
+                           bool enableClickableFixits,
                            QLayout &boxLayout)
 {
     if (diagnostics.size() <= 10) {
-        addChildrenToLayout(mainFilePath, diagnostics.begin(), diagnostics.end(), boxLayout);
+        addChildrenToLayout(mainFilePath, diagnostics.begin(), diagnostics.end(),
+                            enableClickableFixits, boxLayout);
     } else {
-        addChildrenToLayout(mainFilePath, diagnostics.begin(), diagnostics.begin() + 7, boxLayout);
+        addChildrenToLayout(mainFilePath, diagnostics.begin(), diagnostics.begin() + 7,
+                            enableClickableFixits, boxLayout);
 
         auto ellipsisLabel = new QLabel(QStringLiteral("..."));
         ellipsisLabel->setContentsMargins(childIndentationOnTheLeftInPixel, 0, 0, 0);
         boxLayout.addWidget(ellipsisLabel);
 
-        addChildrenToLayout(mainFilePath, diagnostics.end() - 3, diagnostics.end(), boxLayout);
+        addChildrenToLayout(mainFilePath, diagnostics.end() - 3, diagnostics.end(),
+                            enableClickableFixits, boxLayout);
     }
 }
 
@@ -214,13 +234,18 @@ void setupChildDiagnostics(const QString &mainFilePath,
 namespace ClangCodeModel {
 namespace Internal {
 
-void addToolTipToLayout(const ClangBackEnd::DiagnosticContainer &diagnostic, QLayout *target)
+void addToolTipToLayout(const ClangBackEnd::DiagnosticContainer &diagnostic,
+                        QLayout *target,
+                        const DisplayHints &displayHints)
 {
     // Set up header and text row for main diagnostic
-    target->addWidget(new MainDiagnosticWidget(diagnostic));
+    target->addWidget(new MainDiagnosticWidget(diagnostic, displayHints));
 
     // Set up child rows for notes
-    setupChildDiagnostics(diagnostic.location().filePath(), diagnostic.children(), *target);
+    setupChildDiagnostics(diagnostic.location().filePath(),
+                          diagnostic.children(),
+                          displayHints.enableClickableFixits,
+                          *target);
 }
 
 } // namespace Internal

src/plugins/clangcodemodel/clangdiagnostictooltipwidget.h

@@ -34,7 +34,15 @@ QT_END_NAMESPACE
 namespace ClangCodeModel {
 namespace Internal {
 
-void addToolTipToLayout(const ClangBackEnd::DiagnosticContainer &diagnostic, QLayout *target);
+struct DisplayHints {
+    bool showMainDiagnosticHeader = true;
+    bool showFileNameInMainDiagnostic = false;
+    bool enableClickableFixits = true;
+};
+
+void addToolTipToLayout(const ClangBackEnd::DiagnosticContainer &diagnostic,
+                        QLayout *target,
+                        const DisplayHints &displayHints = DisplayHints());
 
 } // namespace Internal
 } // namespace ClangCodeModel

src/plugins/clangcodemodel/clangeditordocumentprocessor.cpp

@@ -57,6 +57,8 @@
 #include <utils/runextensions.h>
 
 #include <QTextBlock>
+#include <QVBoxLayout>
+#include <QWidget>
 
 namespace ClangCodeModel {
 namespace Internal {
@@ -72,6 +74,11 @@ ClangEditorDocumentProcessor::ClangEditorDocumentProcessor(
     , m_semanticHighlighter(document)
     , m_builtinProcessor(document, /*enableSemanticHighlighter=*/ false)
 {
+    m_updateTranslationUnitTimer.setSingleShot(true);
+    m_updateTranslationUnitTimer.setInterval(350);
+    connect(&m_updateTranslationUnitTimer, &QTimer::timeout,
+            this, &ClangEditorDocumentProcessor::updateTranslationUnitIfProjectPartExists);
+
     // Forwarding the semantic info from the builtin processor enables us to provide all
     // editor (widget) related features that are not yet implemented by the clang plugin.
     connect(&m_builtinProcessor, &CppTools::BuiltinEditorDocumentProcessor::cppDocumentUpdated,
@@ -82,6 +89,8 @@ ClangEditorDocumentProcessor::ClangEditorDocumentProcessor(
 
 ClangEditorDocumentProcessor::~ClangEditorDocumentProcessor()
 {
+    m_updateTranslationUnitTimer.stop();
+
     m_parserWatcher.cancel();
     m_parserWatcher.waitForFinished();
 
@@ -93,7 +102,7 @@ ClangEditorDocumentProcessor::~ClangEditorDocumentProcessor()
 
 void ClangEditorDocumentProcessor::run()
 {
-    updateTranslationUnitIfProjectPartExists();
+    m_updateTranslationUnitTimer.start();
 
     // Run clang parser
     disconnect(&m_parserWatcher, &QFutureWatcher<void>::finished,
@@ -160,14 +169,21 @@ void ClangEditorDocumentProcessor::clearProjectPart()
     m_projectPart.clear();
 }
 
-void ClangEditorDocumentProcessor::updateCodeWarnings(const QVector<ClangBackEnd::DiagnosticContainer> &diagnostics,
+void ClangEditorDocumentProcessor::updateCodeWarnings(
+        const QVector<ClangBackEnd::DiagnosticContainer> &diagnostics,
+        const ClangBackEnd::DiagnosticContainer &firstHeaderErrorDiagnostic,
         uint documentRevision)
 {
     if (documentRevision == revision()) {
         m_diagnosticManager.processNewDiagnostics(diagnostics);
         const auto codeWarnings = m_diagnosticManager.takeExtraSelections();
         const auto fixitAvailableMarkers = m_diagnosticManager.takeFixItAvailableMarkers();
-        emit codeWarningsUpdated(revision(), codeWarnings, fixitAvailableMarkers);
+        const auto creator = creatorForHeaderErrorDiagnosticWidget(firstHeaderErrorDiagnostic);
+
+        emit codeWarningsUpdated(revision(),
+                                 codeWarnings,
+                                 creator,
+                                 fixitAvailableMarkers);
     }
 }
 namespace {
@@ -251,6 +267,11 @@ void ClangEditorDocumentProcessor::addDiagnosticToolTipToLayout(uint line,
         addToolTipToLayout(diagnostic, target);
 }
 
+void ClangEditorDocumentProcessor::editorDocumentTimerRestarted()
+{
+    m_updateTranslationUnitTimer.stop(); // Wait for the next call to run().
+}
+
 ClangBackEnd::FileContainer ClangEditorDocumentProcessor::fileContainerWithArguments() const
 {
     return fileContainerWithArguments(m_projectPart.data());
@@ -321,6 +342,38 @@ void ClangEditorDocumentProcessor::requestDocumentAnnotations(const QString &pro
     m_ipcCommunicator.requestDocumentAnnotations(fileContainer);
 }
 
+static Internal::DisplayHints displayHintsForInfoBar()
+{
+    Internal::DisplayHints displayHints;
+    displayHints.showMainDiagnosticHeader = false;
+    displayHints.showFileNameInMainDiagnostic = true;
+    displayHints.enableClickableFixits = false; // Tool chain headers might be changed, so disable.
+
+    return displayHints;
+}
+
+CppTools::BaseEditorDocumentProcessor::HeaderErrorDiagnosticWidgetCreator
+ClangEditorDocumentProcessor::creatorForHeaderErrorDiagnosticWidget(
+        const ClangBackEnd::DiagnosticContainer &firstHeaderErrorDiagnostic)
+{
+    if (firstHeaderErrorDiagnostic.text().isEmpty())
+        return CppTools::BaseEditorDocumentProcessor::HeaderErrorDiagnosticWidgetCreator();
+
+    return [firstHeaderErrorDiagnostic]() {
+        auto vbox = new QVBoxLayout;
+        vbox->setMargin(0);
+        vbox->setContentsMargins(10, 0, 0, 2);
+        vbox->setSpacing(2);
+
+        addToolTipToLayout(firstHeaderErrorDiagnostic, vbox, displayHintsForInfoBar());
+
+        auto widget = new QWidget;
+        widget->setLayout(vbox);
+
+        return widget;
+    };
+}
+
 static CppTools::ProjectPart projectPartForLanguageOption(CppTools::ProjectPart *projectPart)
 {
     if (projectPart)

src/plugins/clangcodemodel/clangeditordocumentprocessor.h

@@ -32,6 +32,7 @@
 #include <cpptools/semantichighlighter.h>
 
 #include <QFutureWatcher>
+#include <QTimer>
 
 namespace ClangBackEnd {
 class DiagnosticContainer;
@@ -67,6 +68,7 @@ public:
     void clearProjectPart();
 
     void updateCodeWarnings(const QVector<ClangBackEnd::DiagnosticContainer> &diagnostics,
+                            const ClangBackEnd::DiagnosticContainer &firstHeaderErrorDiagnostic,
                             uint documentRevision);
     void updateHighlighting(const QVector<ClangBackEnd::HighlightingMarkContainer> &highlightingMarks,
                             const QVector<ClangBackEnd::SourceRangeContainer> &skippedPreprocessorRanges,
@@ -78,6 +80,8 @@ public:
     bool hasDiagnosticsAt(uint line, uint column) const override;
     void addDiagnosticToolTipToLayout(uint line, uint column, QLayout *target) const override;
 
+    void editorDocumentTimerRestarted() override;
+
     ClangBackEnd::FileContainer fileContainerWithArguments() const;
 
     void clearDiagnosticsWithFixIts();
@@ -93,6 +97,8 @@ private:
     void registerTranslationUnitForEditor(CppTools::ProjectPart *projectPart);
     void updateTranslationUnitIfProjectPartExists();
     void requestDocumentAnnotations(const QString &projectpartId);
+    HeaderErrorDiagnosticWidgetCreator creatorForHeaderErrorDiagnosticWidget(
+            const ClangBackEnd::DiagnosticContainer &firstHeaderErrorDiagnostic);
     ClangBackEnd::FileContainer fileContainerWithArguments(CppTools::ProjectPart *projectPart) const;
     ClangBackEnd::FileContainer fileContainerWithDocumentContent(const QString &projectpartId) const;
 
@@ -102,6 +108,7 @@ private:
     QSharedPointer<ClangEditorDocumentParser> m_parser;
     CppTools::ProjectPart::Ptr m_projectPart;
     QFutureWatcher<void> m_parserWatcher;
+    QTimer m_updateTranslationUnitTimer;
     unsigned m_parserRevision;
 
     CppTools::SemanticHighlighter m_semanticHighlighter;

src/plugins/clangcodemodel/clanghighlightingmarksreporter.cpp

@@ -60,6 +60,8 @@ TextEditor::TextStyle toTextStyle(ClangBackEnd::HighlightingType type)
             return TextEditor::C_PREPROCESSOR;
         case HighlightingType::Declaration:
             return TextEditor::C_DECLARATION;
+        case HighlightingType::OutputArgument:
+            return TextEditor::C_OUTPUT_ARGUMENT;
         default:
             return TextEditor::C_TEXT; // never called
     }

src/plugins/clangcodemodel/clangtextmark.cpp

@@ -84,7 +84,7 @@ void ClangTextMark::setIcon(ClangBackEnd::DiagnosticSeverity severity)
 
 bool ClangTextMark::addToolTipContent(QLayout *target)
 {
-    Internal::addToolTipToLayout(m_diagnostic, target);
+    Internal::addToolTipToLayout(m_diagnostic, target, Internal::DisplayHints());
     return true;
 }
 

src/plugins/cmakeprojectmanager/builddirmanager.cpp

@@ -36,12 +36,16 @@
 #include <coreplugin/messagemanager.h>
 #include <coreplugin/editormanager/editormanager.h>
 #include <coreplugin/progressmanager/progressmanager.h>
+#include <cpptools/projectpartbuilder.h>
+#include <projectexplorer/headerpath.h>
 #include <projectexplorer/kit.h>
+#include <projectexplorer/kitinformation.h>
 #include <projectexplorer/project.h>
 #include <projectexplorer/projectexplorerconstants.h>
 #include <projectexplorer/projectnodes.h>
 #include <projectexplorer/target.h>
 #include <projectexplorer/taskhub.h>
+#include <projectexplorer/toolchain.h>
 
 #include <utils/algorithm.h>
 #include <utils/fileutils.h>
@@ -247,6 +251,44 @@ void BuildDirManager::generateProjectTree(CMakeProjectNode *root)
     m_files.clear(); // Some of the FileNodes in files() were deleted!
 }
 
+QSet<Core::Id> BuildDirManager::updateCodeModel(CppTools::ProjectPartBuilder &ppBuilder)
+{
+    QSet<Core::Id> languages;
+    ToolChain *tc = ToolChainKitInformation::toolChain(kit(), ToolChain::Language::Cxx);
+    const Utils::FileName sysroot = SysRootKitInformation::sysRoot(kit());
+
+    QHash<QString, QStringList> targetDataCache;
+    foreach (const CMakeBuildTarget &cbt, buildTargets()) {
+        if (cbt.targetType == UtilityType)
+            continue;
+
+        // CMake shuffles the include paths that it reports via the CodeBlocks generator
+        // So remove the toolchain include paths, so that at least those end up in the correct
+        // place.
+        QStringList cxxflags = getCXXFlagsFor(cbt, targetDataCache);
+        QSet<QString> tcIncludes;
+        foreach (const HeaderPath &hp, tc->systemHeaderPaths(cxxflags, sysroot))
+            tcIncludes.insert(hp.path());
+        QStringList includePaths;
+        foreach (const QString &i, cbt.includeFiles) {
+            if (!tcIncludes.contains(i))
+                includePaths.append(i);
+        }
+        includePaths += buildDirectory().toString();
+        ppBuilder.setIncludePaths(includePaths);
+        ppBuilder.setCFlags(cxxflags);
+        ppBuilder.setCxxFlags(cxxflags);
+        ppBuilder.setDefines(cbt.defines);
+        ppBuilder.setDisplayName(cbt.title);
+
+        const QSet<Core::Id> partLanguages
+                = QSet<Core::Id>::fromList(ppBuilder.createProjectPartsForFiles(cbt.files));
+
+        languages.unite(partLanguages);
+    }
+    return languages;
+}
+
 void BuildDirManager::parse()
 {
     checkConfiguration();
@@ -545,6 +587,102 @@ void BuildDirManager::processCMakeError()
     });
 }
 
+QStringList BuildDirManager::getCXXFlagsFor(const CMakeBuildTarget &buildTarget,
+                                            QHash<QString, QStringList> &cache)
+{
+    // check cache:
+    auto it = cache.constFind(buildTarget.title);
+    if (it != cache.constEnd())
+        return *it;
+
+    if (extractCXXFlagsFromMake(buildTarget, cache))
+        return cache.value(buildTarget.title);
+
+    if (extractCXXFlagsFromNinja(buildTarget, cache))
+        return cache.value(buildTarget.title);
+
+    cache.insert(buildTarget.title, QStringList());
+    return QStringList();
+}
+
+bool BuildDirManager::extractCXXFlagsFromMake(const CMakeBuildTarget &buildTarget,
+                                              QHash<QString, QStringList> &cache)
+{
+    QString makeCommand = QDir::fromNativeSeparators(buildTarget.makeCommand);
+    int startIndex = makeCommand.indexOf('\"');
+    int endIndex = makeCommand.indexOf('\"', startIndex + 1);
+    if (startIndex != -1 && endIndex != -1) {
+        startIndex += 1;
+        QString makefile = makeCommand.mid(startIndex, endIndex - startIndex);
+        int slashIndex = makefile.lastIndexOf('/');
+        makefile.truncate(slashIndex);
+        makefile.append("/CMakeFiles/" + buildTarget.title + ".dir/flags.make");
+        QFile file(makefile);
+        if (file.exists()) {
+            file.open(QIODevice::ReadOnly | QIODevice::Text);
+            QTextStream stream(&file);
+            while (!stream.atEnd()) {
+                QString line = stream.readLine().trimmed();
+                if (line.startsWith("CXX_FLAGS =")) {
+                    // Skip past =
+                    cache.insert(buildTarget.title,
+                                 line.mid(11).trimmed().split(' ', QString::SkipEmptyParts));
+                    return true;
+                }
+            }
+        }
+    }
+    return false;
+}
+
+bool BuildDirManager::extractCXXFlagsFromNinja(const CMakeBuildTarget &buildTarget,
+                                               QHash<QString, QStringList> &cache)
+{
+    Q_UNUSED(buildTarget)
+    if (!cache.isEmpty()) // We fill the cache in one go!
+        return false;
+
+    // Attempt to find build.ninja file and obtain FLAGS (CXX_FLAGS) from there if no suitable flags.make were
+    // found
+    // Get "all" target's working directory
+    QByteArray ninjaFile;
+    QString buildNinjaFile = QDir::fromNativeSeparators(buildTargets().at(0).workingDirectory);
+    buildNinjaFile += "/build.ninja";
+    QFile buildNinja(buildNinjaFile);
+    if (buildNinja.exists()) {
+        buildNinja.open(QIODevice::ReadOnly | QIODevice::Text);
+        ninjaFile = buildNinja.readAll();
+        buildNinja.close();
+    }
+
+    if (ninjaFile.isEmpty())
+        return false;
+
+    QTextStream stream(ninjaFile);
+    bool cxxFound = false;
+    const QString targetSignature = "# Object build statements for ";
+    QString currentTarget;
+
+    while (!stream.atEnd()) {
+        // 1. Look for a block that refers to the current target
+        // 2. Look for a build rule which invokes CXX_COMPILER
+        // 3. Return the FLAGS definition
+        QString line = stream.readLine().trimmed();
+        if (line.startsWith('#')) {
+            if (line.startsWith(targetSignature)) {
+                int pos = line.lastIndexOf(' ');
+                currentTarget = line.mid(pos + 1);
+            }
+        } else if (!currentTarget.isEmpty() && line.startsWith("build")) {
+            cxxFound = line.indexOf("CXX_COMPILER") != -1;
+        } else if (cxxFound && line.startsWith("FLAGS =")) {
+            // Skip past =
+            cache.insert(currentTarget, line.mid(7).trimmed().split(' ', QString::SkipEmptyParts));
+        }
+    }
+    return !cache.isEmpty();
+}
+
 void BuildDirManager::checkConfiguration()
 {
     if (m_tempDir) // always throw away changes in the tmpdir!
@@ -656,6 +794,7 @@ CMakeConfig BuildDirManager::parseConfiguration(const Utils::FileName &cacheFile
     }
 
     QSet<QByteArray> advancedSet;
+    QMap<QByteArray, QByteArray> valuesMap;
     QByteArray documentation;
     while (!cache.atEnd()) {
         const QByteArray line = trimCMakeCacheLine(cache.readLine());
@@ -679,6 +818,8 @@ CMakeConfig BuildDirManager::parseConfiguration(const Utils::FileName &cacheFile
 
         if (key.endsWith("-ADVANCED") && value == "1") {
             advancedSet.insert(key.left(key.count() - 9 /* "-ADVANCED" */));
+        } else if (key.endsWith("-STRINGS") && fromByteArray(type) == CMakeConfigItem::INTERNAL) {
+            valuesMap[key.left(key.count() - 8) /* "-STRINGS" */] = value;
         } else {
             CMakeConfigItem::Type t = fromByteArray(type);
             result << CMakeConfigItem(key, t, documentation, value);
@@ -689,6 +830,13 @@ CMakeConfig BuildDirManager::parseConfiguration(const Utils::FileName &cacheFile
     for (int i = 0; i < result.count(); ++i) {
         CMakeConfigItem &item = result[i];
         item.isAdvanced = advancedSet.contains(item.key);
+
+        if (valuesMap.contains(item.key)) {
+            item.values = CMakeConfigItem::cmakeSplitValue(QString::fromUtf8(valuesMap[item.key]));
+        } else if (item.key  == "CMAKE_BUILD_TYPE") {
+            // WA for known options
+            item.values << "" << "Debug" << "Release" << "MinSizeRel" << "RelWithDebInfo";
+        }
     }
 
     Utils::sort(result, CMakeConfigItem::sortOperator());

src/plugins/cmakeprojectmanager/builddirmanager.h

@@ -45,6 +45,7 @@ QT_FORWARD_DECLARE_CLASS(QTemporaryDir);
 QT_FORWARD_DECLARE_CLASS(QFileSystemWatcher);
 
 namespace Core { class IDocument; }
+namespace CppTools { class ProjectPartBuilder; }
 
 namespace ProjectExplorer {
 class FileNode;
@@ -80,6 +81,7 @@ public:
     bool persistCMakeState();
 
     void generateProjectTree(CMakeProjectNode *root);
+    QSet<Core::Id> updateCodeModel(CppTools::ProjectPartBuilder &ppBuilder);
 
     QList<CMakeBuildTarget> buildTargets() const;
     CMakeConfig parsedConfiguration() const;
@@ -117,6 +119,10 @@ private:
     void processCMakeOutput();
     void processCMakeError();
 
+    QStringList getCXXFlagsFor(const CMakeBuildTarget &buildTarget, QHash<QString, QStringList> &cache);
+    bool extractCXXFlagsFromMake(const CMakeBuildTarget &buildTarget, QHash<QString, QStringList> &cache);
+    bool extractCXXFlagsFromNinja(const CMakeBuildTarget &buildTarget, QHash<QString, QStringList> &cache);
+
     bool m_hasData = false;
 
     CMakeBuildConfiguration *m_buildConfiguration = nullptr;

src/plugins/cmakeprojectmanager/cmakebuildconfiguration.cpp

@@ -211,6 +211,11 @@ void CMakeBuildConfiguration::generateProjectTree(CMakeProjectNode *root) const
     return m_buildDirManager->generateProjectTree(root);
 }
 
+QSet<Core::Id> CMakeBuildConfiguration::updateCodeModel(CppTools::ProjectPartBuilder &ppBuilder)
+{
+    return m_buildDirManager->updateCodeModel(ppBuilder);
+}
+
 FileName CMakeBuildConfiguration::shadowBuildDirectory(const FileName &projectFilePath,
                                                        const Kit *k,
                                                        const QString &bcName,
@@ -240,6 +245,7 @@ QList<ConfigModel::DataItem> CMakeBuildConfiguration::completeCMakeConfiguration
         j.key = QString::fromUtf8(i.key);
         j.value = QString::fromUtf8(i.value);
         j.description = QString::fromUtf8(i.documentation);
+        j.values = i.values;
 
         j.isAdvanced = i.isAdvanced || i.type == CMakeConfigItem::INTERNAL;
         switch (i.type) {
@@ -275,6 +281,7 @@ void CMakeBuildConfiguration::setCurrentCMakeConfiguration(const QList<ConfigMod
         ni.value = i.value.toUtf8();
         ni.documentation = i.description.toUtf8();
         ni.isAdvanced = i.isAdvanced;
+        ni.values = i.values;
         switch (i.type) {
         case CMakeProjectManager::ConfigModel::DataItem::BOOLEAN:
             ni.type = CMakeConfigItem::BOOL;

src/plugins/cmakeprojectmanager/cmakebuildconfiguration.h

@@ -32,6 +32,7 @@
 #include <projectexplorer/buildconfiguration.h>
 #include <projectexplorer/abi.h>
 
+namespace CppTools { class ProjectPartBuilder; }
 namespace ProjectExplorer { class ToolChain; }
 
 namespace CMakeProjectManager {
@@ -82,6 +83,7 @@ public:
 
     QList<CMakeBuildTarget> buildTargets() const;
     void generateProjectTree(CMakeProjectNode *root) const;
+    QSet<Core::Id> updateCodeModel(CppTools::ProjectPartBuilder &ppBuilder);
 
     static Utils::FileName
     shadowBuildDirectory(const Utils::FileName &projectFilePath, const ProjectExplorer::Kit *k,

src/plugins/cmakeprojectmanager/cmakebuildsettingswidget.cpp

@@ -26,6 +26,7 @@
 #include "cmakebuildsettingswidget.h"
 
 #include "configmodel.h"
+#include "configmodelitemdelegate.h"
 #include "cmakeproject.h"
 #include "cmakebuildconfiguration.h"
 
@@ -140,6 +141,7 @@ CMakeBuildSettingsWidget::CMakeBuildSettingsWidget(CMakeBuildConfiguration *bc)
     m_configView->setSelectionBehavior(QAbstractItemView::SelectItems);
     m_configView->setFrameShape(QFrame::NoFrame);
     m_configView->hideColumn(2); // Hide isAdvanced column
+    m_configView->setItemDelegate(new ConfigModelItemDelegate(m_configView));
     QFrame *findWrapper = Core::ItemViewFind::createSearchableWrapper(m_configView, Core::ItemViewFind::LightColored);
     findWrapper->setFrameStyle(QFrame::StyledPanel);
 

src/plugins/cmakeprojectmanager/cmakeconfigitem.cpp

@@ -42,7 +42,7 @@ CMakeConfigItem::CMakeConfigItem() = default;
 
 CMakeConfigItem::CMakeConfigItem(const CMakeConfigItem &other) :
     key(other.key), type(other.type), isAdvanced(other.isAdvanced),
-    value(other.value), documentation(other.documentation)
+    value(other.value), documentation(other.documentation), values(other.values)
 { }
 
 CMakeConfigItem::CMakeConfigItem(const QByteArray &k, Type t,

src/plugins/cmakeprojectmanager/cmakeconfigitem.h

@@ -61,6 +61,7 @@ public:
     bool isAdvanced = false;
     QByteArray value; // converted to string as needed
     QByteArray documentation;
+    QStringList values;
 };
 using CMakeConfig = QList<CMakeConfigItem>;
 

src/plugins/cmakeprojectmanager/cmakeproject.cpp

@@ -94,102 +94,6 @@ CMakeProject::~CMakeProject()
     qDeleteAll(m_extraCompilers);
 }
 
-QStringList CMakeProject::getCXXFlagsFor(const CMakeBuildTarget &buildTarget,
-                                         QHash<QString, QStringList> &cache)
-{
-    // check cache:
-    auto it = cache.constFind(buildTarget.title);
-    if (it != cache.constEnd())
-        return *it;
-
-    if (extractCXXFlagsFromMake(buildTarget, cache))
-        return cache.value(buildTarget.title);
-
-    if (extractCXXFlagsFromNinja(buildTarget, cache))
-        return cache.value(buildTarget.title);
-
-    cache.insert(buildTarget.title, QStringList());
-    return QStringList();
-}
-
-bool CMakeProject::extractCXXFlagsFromMake(const CMakeBuildTarget &buildTarget,
-                                           QHash<QString, QStringList> &cache)
-{
-    QString makeCommand = QDir::fromNativeSeparators(buildTarget.makeCommand);
-    int startIndex = makeCommand.indexOf('\"');
-    int endIndex = makeCommand.indexOf('\"', startIndex + 1);
-    if (startIndex != -1 && endIndex != -1) {
-        startIndex += 1;
-        QString makefile = makeCommand.mid(startIndex, endIndex - startIndex);
-        int slashIndex = makefile.lastIndexOf('/');
-        makefile.truncate(slashIndex);
-        makefile.append("/CMakeFiles/" + buildTarget.title + ".dir/flags.make");
-        QFile file(makefile);
-        if (file.exists()) {
-            file.open(QIODevice::ReadOnly | QIODevice::Text);
-            QTextStream stream(&file);
-            while (!stream.atEnd()) {
-                QString line = stream.readLine().trimmed();
-                if (line.startsWith("CXX_FLAGS =")) {
-                    // Skip past =
-                    cache.insert(buildTarget.title,
-                                 line.mid(11).trimmed().split(' ', QString::SkipEmptyParts));
-                    return true;
-                }
-            }
-        }
-    }
-    return false;
-}
-
-bool CMakeProject::extractCXXFlagsFromNinja(const CMakeBuildTarget &buildTarget,
-                                            QHash<QString, QStringList> &cache)
-{
-    Q_UNUSED(buildTarget)
-    if (!cache.isEmpty()) // We fill the cache in one go!
-        return false;
-
-    // Attempt to find build.ninja file and obtain FLAGS (CXX_FLAGS) from there if no suitable flags.make were
-    // found
-    // Get "all" target's working directory
-    QByteArray ninjaFile;
-    QString buildNinjaFile = QDir::fromNativeSeparators(buildTargets().at(0).workingDirectory);
-    buildNinjaFile += "/build.ninja";
-    QFile buildNinja(buildNinjaFile);
-    if (buildNinja.exists()) {
-        buildNinja.open(QIODevice::ReadOnly | QIODevice::Text);
-        ninjaFile = buildNinja.readAll();
-        buildNinja.close();
-    }
-
-    if (ninjaFile.isEmpty())
-        return false;
-
-    QTextStream stream(ninjaFile);
-    bool cxxFound = false;
-    const QString targetSignature = "# Object build statements for ";
-    QString currentTarget;
-
-    while (!stream.atEnd()) {
-        // 1. Look for a block that refers to the current target
-        // 2. Look for a build rule which invokes CXX_COMPILER
-        // 3. Return the FLAGS definition
-        QString line = stream.readLine().trimmed();
-        if (line.startsWith('#')) {
-            if (line.startsWith(targetSignature)) {
-                int pos = line.lastIndexOf(' ');
-                currentTarget = line.mid(pos + 1);
-            }
-        } else if (!currentTarget.isEmpty() && line.startsWith("build")) {
-            cxxFound = line.indexOf("CXX_COMPILER") != -1;
-        } else if (cxxFound && line.startsWith("FLAGS =")) {
-            // Skip past =
-            cache.insert(currentTarget, line.mid(7).trimmed().split(' ', QString::SkipEmptyParts));
-        }
-    }
-    return !cache.isEmpty();
-}
-
 void CMakeProject::updateProjectData()
 {
     auto cmakeBc = qobject_cast<CMakeBuildConfiguration *>(sender());
@@ -225,39 +129,11 @@ void CMakeProject::updateProjectData()
             activeQtVersion = CppTools::ProjectPart::Qt5;
     }
 
-    const FileName sysroot = SysRootKitInformation::sysRoot(k);
-
     ppBuilder.setQtVersion(activeQtVersion);
 
-    QHash<QString, QStringList> targetDataCache;
-    foreach (const CMakeBuildTarget &cbt, buildTargets()) {
-        if (cbt.targetType == UtilityType)
-            continue;
-
-        // CMake shuffles the include paths that it reports via the CodeBlocks generator
-        // So remove the toolchain include paths, so that at least those end up in the correct
-        // place.
-        QStringList cxxflags = getCXXFlagsFor(cbt, targetDataCache);
-        QSet<QString> tcIncludes;
-        foreach (const HeaderPath &hp, tc->systemHeaderPaths(cxxflags, sysroot)) {
-            tcIncludes.insert(hp.path());
-        }
-        QStringList includePaths;
-        foreach (const QString &i, cbt.includeFiles) {
-            if (!tcIncludes.contains(i))
-                includePaths.append(i);
-        }
-        includePaths += projectDirectory().toString();
-        ppBuilder.setIncludePaths(includePaths);
-        ppBuilder.setCFlags(cxxflags);
-        ppBuilder.setCxxFlags(cxxflags);
-        ppBuilder.setDefines(cbt.defines);
-        ppBuilder.setDisplayName(cbt.title);
-
-        const QList<Core::Id> languages = ppBuilder.createProjectPartsForFiles(cbt.files);
-        foreach (Core::Id language, languages)
-            setProjectLanguage(language, true);
-    }
+    const QSet<Core::Id> languages = cmakeBc->updateCodeModel(ppBuilder);
+    for (const auto &lid : languages)
+        setProjectLanguage(lid, true);
 
     m_codeModelFuture.cancel();
     pinfo.finish();

src/plugins/cmakeprojectmanager/cmakeproject.h

@@ -120,9 +120,6 @@ private:
     QStringList filesGeneratedFrom(const QString &sourceFile) const final;
     void updateTargetRunConfigurations(ProjectExplorer::Target *t);
     void updateApplicationAndDeploymentTargets();
-    QStringList getCXXFlagsFor(const CMakeBuildTarget &buildTarget, QHash<QString, QStringList> &cache);
-    bool extractCXXFlagsFromMake(const CMakeBuildTarget &buildTarget, QHash<QString, QStringList> &cache);
-    bool extractCXXFlagsFromNinja(const CMakeBuildTarget &buildTarget, QHash<QString, QStringList> &cache);
 
     ProjectExplorer::Target *m_connectedTarget = nullptr;
 

src/plugins/cmakeprojectmanager/cmakeprojectmanager.pro

@@ -28,7 +28,8 @@ HEADERS = builddirmanager.h \
     cmakebuildsettingswidget.h \
     cmakeindenter.h \
     cmakeautocompleter.h \
-    configmodel.h
+    configmodel.h \
+    configmodelitemdelegate.h
 
 SOURCES = builddirmanager.cpp \
     cmakebuildstep.cpp \
@@ -54,6 +55,7 @@ SOURCES = builddirmanager.cpp \
     cmakebuildsettingswidget.cpp \
     cmakeindenter.cpp \
     cmakeautocompleter.cpp \
-    configmodel.cpp
+    configmodel.cpp \
+    configmodelitemdelegate.cpp
 
 RESOURCES += cmakeproject.qrc

src/plugins/cmakeprojectmanager/cmakeprojectmanager.qbs

@@ -71,6 +71,8 @@ QtcPlugin {
         "cmakeautocompleter.h",
         "cmakeautocompleter.cpp",
         "configmodel.cpp",
-        "configmodel.h"
+        "configmodel.h",
+        "configmodelitemdelegate.cpp",
+        "configmodelitemdelegate.h"
     ]
 }

src/plugins/cmakeprojectmanager/configmodel.cpp

@@ -88,6 +88,15 @@ QVariant ConfigModel::data(const QModelIndex &index, int role) const
 
     const InternalDataItem &item = m_configuration[index.row()];
 
+    if (index.column() < 2) {
+        switch (role) {
+        case ItemTypeRole:
+            return item.type;
+        case ItemValuesRole:
+            return item.values;
+        }
+    }
+
     switch (index.column()) {
     case 0:
         switch (role) {
@@ -97,8 +106,6 @@ QVariant ConfigModel::data(const QModelIndex &index, int role) const
             return item.key;
         case Qt::ToolTipRole:
             return item.description;
-        case Qt::UserRole:
-            return item.type;
         case Qt::FontRole: {
             QFont font;
             font.setItalic(item.isCMakeChanged);
@@ -126,8 +133,6 @@ QVariant ConfigModel::data(const QModelIndex &index, int role) const
         }
         case Qt::ToolTipRole:
             return item.description;
-        case Qt::UserRole:
-            return item.type;
         default:
             return QVariant();
         }
@@ -209,13 +214,15 @@ QVariant ConfigModel::headerData(int section, Qt::Orientation orientation, int r
 void ConfigModel::appendConfiguration(const QString &key,
                                       const QString &value,
                                       const ConfigModel::DataItem::Type type,
-                                      const QString &description)
+                                      const QString &description,
+                                      const QStringList &values)
 {
     DataItem item;
     item.key = key;
     item.type = type;
     item.value = value;
     item.description = description;
+    item.values = values;
 
     InternalDataItem internalItem(item);
     internalItem.isUserNew = true;

src/plugins/cmakeprojectmanager/configmodel.h

@@ -34,6 +34,11 @@ class ConfigModel : public QAbstractTableModel
     Q_OBJECT
 
 public:
+    enum Roles {
+        ItemTypeRole = Qt::UserRole,
+        ItemValuesRole
+    };
+
     class DataItem {
     public:
         enum Type { BOOLEAN, FILE, DIRECTORY, STRING, UNKNOWN};
@@ -43,6 +48,7 @@ public:
         bool isAdvanced = false;
         QString value;
         QString description;
+        QStringList values;
     };
 
     explicit ConfigModel(QObject *parent = nullptr);
@@ -58,7 +64,8 @@ public:
     void appendConfiguration(const QString &key,
                              const QString &value = QString(),
                              const DataItem::Type type = DataItem::UNKNOWN,
-                             const QString &description = QString());
+                             const QString &description = QString(),
+                             const QStringList &values = QStringList());
     void setConfiguration(const QList<DataItem> &config);
     void flush();
     void resetAllChanges();

src/plugins/cmakeprojectmanager/configmodelitemdelegate.cpp

@@ -0,0 +1,78 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 Alexander Drozdov.
+** Contact: adrozdoff@gmail.com
+**
+** This file is part of CMakeProjectManager2 plugin.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file.  Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+****************************************************************************/
+
+#include "configmodelitemdelegate.h"
+#include "configmodel.h"
+
+#include <QComboBox>
+
+namespace CMakeProjectManager {
+
+ConfigModelItemDelegate::ConfigModelItemDelegate(QObject* parent)
+    : QStyledItemDelegate(parent)
+{ }
+
+ConfigModelItemDelegate::~ConfigModelItemDelegate()
+{ }
+
+QWidget* ConfigModelItemDelegate::createEditor(QWidget* parent, const QStyleOptionViewItem& option, const QModelIndex& index) const
+{
+    // ComboBox ony in column 2
+    if (index.column() != 1)
+        return QStyledItemDelegate::createEditor(parent, option, index);
+
+    auto model = index.model();
+    auto values = model->data(index, ConfigModel::ItemValuesRole).toStringList();
+    if (values.isEmpty())
+        return QStyledItemDelegate::createEditor(parent, option, index);
+
+    // Create the combobox and populate it
+    auto cb = new QComboBox(parent);
+    cb->addItems(values);
+    cb->setEditable(true);
+
+    return cb;
+}
+
+void ConfigModelItemDelegate::setEditorData(QWidget* editor, const QModelIndex& index) const
+{
+    if (QComboBox* cb = qobject_cast<QComboBox*>(editor)) {
+       // get the index of the text in the combobox that matches the current value of the itenm
+       QString currentText = index.data(Qt::EditRole).toString();
+       int cbIndex = cb->findText(currentText);
+       // if it is valid, adjust the combobox
+       if (cbIndex >= 0)
+           cb->setCurrentIndex(cbIndex);
+       else
+           cb->setEditText(currentText);
+    } else {
+        QStyledItemDelegate::setEditorData(editor, index);
+    }
+}
+
+void ConfigModelItemDelegate::setModelData(QWidget* editor, QAbstractItemModel* model, const QModelIndex& index) const
+{
+    if (QComboBox* cb = qobject_cast<QComboBox*>(editor))
+        // save the current text of the combo box as the current value of the item
+        model->setData(index, cb->currentText(), Qt::EditRole);
+    else
+        QStyledItemDelegate::setModelData(editor, model, index);
+}
+
+} // namespace CMakeProjectManager
+

src/plugins/cmakeprojectmanager/configmodelitemdelegate.h

@@ -0,0 +1,37 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 Alexander Drozdov.
+** Contact: adrozdoff@gmail.com
+**
+** This file is part of CMakeProjectManager2 plugin.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file.  Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+****************************************************************************/
+
+#pragma once
+
+#include <QStyledItemDelegate>
+
+namespace CMakeProjectManager {
+
+class ConfigModelItemDelegate : public QStyledItemDelegate
+{
+    Q_OBJECT
+public:
+    ConfigModelItemDelegate(QObject* parent=0);
+    ~ConfigModelItemDelegate();
+
+    QWidget* createEditor(QWidget* parent, const QStyleOptionViewItem& option, const QModelIndex& index) const override;
+    void setEditorData(QWidget* editor, const QModelIndex& index) const override;
+    void setModelData(QWidget* editor, QAbstractItemModel* model, const QModelIndex& index) const override;
+};
+
+} // namespace CMakeProjectManager

src/plugins/coreplugin/infobar.cpp

@@ -32,6 +32,7 @@
 
 #include <QFrame>
 #include <QHBoxLayout>
+#include <QVBoxLayout>
 #include <QLabel>
 #include <QToolButton>
 
@@ -67,6 +68,20 @@ void InfoBarEntry::setCancelButtonInfo(const QString &_cancelButtonText, CallBac
     m_cancelButtonCallBack = callBack;
 }
 
+void InfoBarEntry::setSuppressionButtonInfo(InfoBarEntry::CallBack callback)
+{
+    m_suppressionButtonCallBack = callback;
+}
+
+void InfoBarEntry::setShowDefaultCancelButton(bool yesno)
+{
+    m_showDefaultCancelButton = yesno;
+}
+
+void InfoBarEntry::setDetailsWidgetCreator(const InfoBarEntry::DetailsWidgetCreator &creator)
+{
+    m_detailsWidgetCreator = creator;
+}
 
 void InfoBar::addInfo(const InfoBarEntry &info)
 {
@@ -124,10 +139,13 @@ void InfoBar::clear()
 void InfoBar::globallySuppressInfo(Id id)
 {
     globallySuppressed.insert(id);
-    QStringList list;
-    foreach (Id i, globallySuppressed)
-        list << QLatin1String(i.name());
-    ICore::settings()->setValue(QLatin1String(C_SUPPRESSED_WARNINGS), list);
+    writeGloballySuppressedToSettings();
+}
+
+void InfoBar::globallyUnsuppressInfo(Id id)
+{
+    globallySuppressed.remove(id);
+    writeGloballySuppressedToSettings();
 }
 
 void InfoBar::initializeGloballySuppressed()
@@ -148,12 +166,17 @@ bool InfoBar::anyGloballySuppressed()
     return !globallySuppressed.isEmpty();
 }
 
+void InfoBar::writeGloballySuppressedToSettings()
+{
+    QStringList list;
+    foreach (Id i, globallySuppressed)
+        list << QLatin1String(i.name());
+    ICore::settings()->setValue(QLatin1String(C_SUPPRESSED_WARNINGS), list);
+}
+
 
 InfoBarDisplay::InfoBarDisplay(QObject *parent)
     : QObject(parent)
-    , m_infoBar(0)
-    , m_boxLayout(0)
-    , m_boxIndex(0)
 {
 }
 
@@ -209,13 +232,43 @@ void InfoBarDisplay::update()
         infoWidget->setLineWidth(1);
         infoWidget->setAutoFillBackground(true);
 
-        QHBoxLayout *hbox = new QHBoxLayout(infoWidget);
+        QHBoxLayout *hbox = new QHBoxLayout;
         hbox->setMargin(2);
 
+        auto *vbox = new QVBoxLayout(infoWidget);
+        vbox->setMargin(0);
+        vbox->addLayout(hbox);
+
         QLabel *infoWidgetLabel = new QLabel(info.infoText);
         infoWidgetLabel->setWordWrap(true);
         hbox->addWidget(infoWidgetLabel);
 
+        if (info.m_detailsWidgetCreator) {
+            if (m_isShowingDetailsWidget) {
+                QWidget *detailsWidget = info.m_detailsWidgetCreator();
+                vbox->addWidget(detailsWidget);
+            }
+
+            auto *showDetailsButton = new QToolButton;
+            showDetailsButton->setCheckable(true);
+            showDetailsButton->setChecked(m_isShowingDetailsWidget);
+            showDetailsButton->setText(tr("&Show Details"));
+            connect(showDetailsButton, &QToolButton::clicked, [this, vbox, info] (bool) {
+                QWidget *detailsWidget = vbox->count() == 2 ? vbox->itemAt(1)->widget() : nullptr;
+                if (!detailsWidget) {
+                    detailsWidget = info.m_detailsWidgetCreator();
+                    vbox->addWidget(detailsWidget);
+                }
+
+                m_isShowingDetailsWidget = !m_isShowingDetailsWidget;
+                detailsWidget->setVisible(m_isShowingDetailsWidget);
+            });
+
+            hbox->addWidget(showDetailsButton);
+        } else {
+            m_isShowingDetailsWidget = false;
+        }
+
         if (!info.buttonText.isEmpty()) {
             QToolButton *infoWidgetButton = new QToolButton;
             infoWidgetButton->setText(info.buttonText);
@@ -229,7 +282,9 @@ void InfoBarDisplay::update()
         if (info.globalSuppression == InfoBarEntry::GlobalSuppressionEnabled) {
             infoWidgetSuppressButton = new QToolButton;
             infoWidgetSuppressButton->setText(tr("Do Not Show Again"));
-            connect(infoWidgetSuppressButton, &QAbstractButton::clicked, this, [this, id] {
+            connect(infoWidgetSuppressButton, &QAbstractButton::clicked, this, [this, info, id] {
+                if (info.m_suppressionButtonCallBack)
+                    info.m_suppressionButtonCallBack();
                 m_infoBar->removeInfo(id);
                 InfoBar::globallySuppressInfo(id);
             });
@@ -245,11 +300,16 @@ void InfoBarDisplay::update()
         });
 
         if (info.cancelButtonText.isEmpty()) {
+            if (info.m_showDefaultCancelButton) {
                 infoWidgetCloseButton->setAutoRaise(true);
                 infoWidgetCloseButton->setIcon(Utils::Icons::CLOSE_FOREGROUND.icon());
                 infoWidgetCloseButton->setToolTip(tr("Close"));
+            }
+
             if (infoWidgetSuppressButton)
                 hbox->addWidget(infoWidgetSuppressButton);
+
+            if (info.m_showDefaultCancelButton)
                 hbox->addWidget(infoWidgetCloseButton);
         } else {
             infoWidgetCloseButton->setText(info.cancelButtonText);

src/plugins/coreplugin/infobar.h

@@ -54,10 +54,15 @@ public:
     InfoBarEntry(Id _id, const QString &_infoText, GlobalSuppressionMode _globalSuppression = GlobalSuppressionDisabled);
     InfoBarEntry(const InfoBarEntry &other) { *this = other; }
 
-    typedef std::function<void()> CallBack;
+    using CallBack = std::function<void()>;
     void setCustomButtonInfo(const QString &_buttonText, CallBack callBack);
     void setCancelButtonInfo(CallBack callBack);
     void setCancelButtonInfo(const QString &_cancelButtonText, CallBack callBack);
+    void setSuppressionButtonInfo(CallBack callback);
+    void setShowDefaultCancelButton(bool yesno);
+
+    using DetailsWidgetCreator = std::function<QWidget*()>;
+    void setDetailsWidgetCreator(const DetailsWidgetCreator &creator);
 
 private:
     Id id;
@@ -66,7 +71,10 @@ private:
     CallBack m_buttonCallBack;
     QString cancelButtonText;
     CallBack m_cancelButtonCallBack;
+    CallBack m_suppressionButtonCallBack;
     GlobalSuppressionMode globalSuppression;
+    DetailsWidgetCreator m_detailsWidgetCreator;
+    bool m_showDefaultCancelButton = true;
     friend class InfoBar;
     friend class InfoBarDisplay;
 };
@@ -84,6 +92,7 @@ public:
     void enableInfo(Id id);
     void clear();
     static void globallySuppressInfo(Id id);
+    static void globallyUnsuppressInfo(Id id);
     static void initializeGloballySuppressed();
     static void clearGloballySuppressed();
     static bool anyGloballySuppressed();
@@ -91,6 +100,9 @@ public:
 signals:
     void changed();
 
+private:
+    static void writeGloballySuppressedToSettings();
+
 private:
     QList<InfoBarEntry> m_infoBarEntries;
     QSet<Id> m_suppressed;
@@ -113,9 +125,10 @@ private:
     void widgetDestroyed();
 
     QList<QWidget *> m_infoWidgets;
-    InfoBar *m_infoBar;
-    QBoxLayout *m_boxLayout;
-    int m_boxIndex;
+    InfoBar *m_infoBar = nullptr;
+    QBoxLayout *m_boxLayout = nullptr;
+    int m_boxIndex = 0;
+    bool m_isShowingDetailsWidget = false;
 };
 
 } // namespace Core

src/plugins/cppeditor/cppeditor.cpp

@@ -44,6 +44,7 @@
 #include <coreplugin/actionmanager/actionmanager.h>
 #include <coreplugin/editormanager/editormanager.h>
 #include <coreplugin/editormanager/documentmodel.h>
+#include <coreplugin/infobar.h>
 
 #include <cpptools/cppchecksymbols.h>
 #include <cpptools/cppcodeformatter.h>
@@ -77,6 +78,7 @@
 #include <cplusplus/FastPreprocessor.h>
 #include <cplusplus/MatchingText.h>
 #include <utils/qtcassert.h>
+#include <utils/utilsicons.h>
 
 #include <QApplication>
 #include <QAction>
@@ -126,9 +128,13 @@ public:
     QSharedPointer<FunctionDeclDefLink> m_declDefLink;
 
     QScopedPointer<FollowSymbolUnderCursor> m_followSymbolUnderCursor;
-    QToolButton *m_preprocessorButton;
+
+    QToolButton *m_preprocessorButton = nullptr;
+    QToolButton *m_headerErrorsIndicatorButton = nullptr;
 
     CppSelectionChanger m_cppSelectionChanger;
+
+    CppEditorWidget::HeaderErrorDiagnosticWidgetCreator m_headerErrorDiagnosticWidgetCreator;
 };
 
 CppEditorWidgetPrivate::CppEditorWidgetPrivate(CppEditorWidget *q)
@@ -139,7 +145,6 @@ CppEditorWidgetPrivate::CppEditorWidgetPrivate(CppEditorWidget *q)
     , m_useSelectionsUpdater(q)
     , m_declDefLinkFinder(new FunctionDeclDefLinkFinder(q))
     , m_followSymbolUnderCursor(new FollowSymbolUnderCursor(q))
-    , m_preprocessorButton(0)
     , m_cppSelectionChanger()
 {
 }
@@ -224,7 +229,15 @@ void CppEditorWidget::finalizeInitialization()
     connect(cmd, &Command::keySequenceChanged, this, &CppEditorWidget::updatePreprocessorButtonTooltip);
     updatePreprocessorButtonTooltip();
     connect(d->m_preprocessorButton, &QAbstractButton::clicked, this, &CppEditorWidget::showPreProcessorWidget);
+
+    d->m_headerErrorsIndicatorButton = new QToolButton(this);
+    d->m_headerErrorsIndicatorButton->setIcon(Utils::Icons::WARNING_TOOLBAR.pixmap());
+    connect(d->m_headerErrorsIndicatorButton, &QAbstractButton::clicked,
+            this, &CppEditorWidget::showHeaderErrorInfoBar);
+    d->m_headerErrorsIndicatorButton->setEnabled(false);
+
     insertExtraToolBarWidget(TextEditorWidget::Left, d->m_preprocessorButton);
+    insertExtraToolBarWidget(TextEditorWidget::Left, d->m_headerErrorsIndicatorButton);
     insertExtraToolBarWidget(TextEditorWidget::Left, d->m_cppEditorOutline->widget());
 }
 
@@ -287,6 +300,7 @@ void CppEditorWidget::onCppDocumentUpdated()
 
 void CppEditorWidget::onCodeWarningsUpdated(unsigned revision,
                                             const QList<QTextEdit::ExtraSelection> selections,
+                                            const HeaderErrorDiagnosticWidgetCreator &creator,
                                             const TextEditor::RefactorMarkers &refactorMarkers)
 {
     if (revision != documentRevision())
@@ -294,6 +308,9 @@ void CppEditorWidget::onCodeWarningsUpdated(unsigned revision,
 
     setExtraSelections(TextEditorWidget::CodeWarningsSelection, selections);
     setRefactorMarkers(refactorMarkersWithoutClangMarkers() + refactorMarkers);
+
+    d->m_headerErrorDiagnosticWidgetCreator = creator;
+    updateHeaderErrorWidgets();
 }
 
 void CppEditorWidget::onIfdefedOutBlocksUpdated(unsigned revision,
@@ -304,6 +321,24 @@ void CppEditorWidget::onIfdefedOutBlocksUpdated(unsigned revision,
     setIfdefedOutBlocks(ifdefedOutBlocks);
 }
 
+void CppEditorWidget::updateHeaderErrorWidgets()
+{
+    const Id id(Constants::ERRORS_IN_HEADER_FILES);
+    InfoBar *infoBar = textDocument()->infoBar();
+
+    infoBar->removeInfo(id);
+
+    if (d->m_headerErrorDiagnosticWidgetCreator) {
+        if (infoBar->canInfoBeAdded(id)) {
+            addHeaderErrorInfoBarEntryAndHideIndicator();
+        } else {
+            d->m_headerErrorsIndicatorButton->setEnabled(true);
+        }
+    } else {
+        d->m_headerErrorsIndicatorButton->setEnabled(false);
+    }
+}
+
 void CppEditorWidget::findUsages()
 {
     if (!d->m_modelManager)
@@ -399,6 +434,25 @@ void CppEditorWidget::renameSymbolUnderCursorBuiltin()
         renameUsages(); // Rename non-local symbol or macro
 }
 
+void CppEditorWidget::addHeaderErrorInfoBarEntryAndHideIndicator() const
+{
+    InfoBarEntry info(Constants::ERRORS_IN_HEADER_FILES,
+                      tr("<b>Warning</b>: The code model could not parse an included file, "
+                         "which might lead to slow or incorrect code completion and "
+                         "highlighting, for example."),
+                      InfoBarEntry::GlobalSuppressionEnabled);
+    info.setDetailsWidgetCreator(d->m_headerErrorDiagnosticWidgetCreator);
+    info.setShowDefaultCancelButton(false);
+    info.setSuppressionButtonInfo([this](){
+        d->m_headerErrorsIndicatorButton->setEnabled(true);
+    });
+
+    InfoBar *infoBar = textDocument()->infoBar();
+    infoBar->addInfo(info);
+
+    d->m_headerErrorsIndicatorButton->setEnabled(false);
+}
+
 namespace {
 
 QList<ProjectPart::Ptr> fetchProjectParts(CppTools::CppModelManager *modelManager,
@@ -970,5 +1024,14 @@ void CppEditorWidget::showPreProcessorWidget()
     }
 }
 
+void CppEditorWidget::showHeaderErrorInfoBar()
+{
+    const Id id(Constants::ERRORS_IN_HEADER_FILES);
+    QTC_CHECK(!textDocument()->infoBar()->canInfoBeAdded(id));
+
+    InfoBar::globallyUnsuppressInfo(id);
+    addHeaderErrorInfoBarEntryAndHideIndicator();
+}
+
 } // namespace Internal
 } // namespace CppEditor

src/plugins/cppeditor/cppeditor.h

@@ -31,6 +31,10 @@
 
 #include <QScopedPointer>
 
+namespace Core {
+class InfoBarEntry;
+}
+
 namespace CppTools {
 class CppEditorOutline;
 class RefactoringEngineInterface;
@@ -87,6 +91,7 @@ public:
 
     void switchDeclarationDefinition(bool inNextSplit);
     void showPreProcessorWidget();
+    void showHeaderErrorInfoBar();
 
     void findUsages();
     void renameSymbolUnderCursor();
@@ -108,6 +113,9 @@ protected:
 
     void slotCodeStyleSettingsChanged(const QVariant &) override;
 
+public:
+    using HeaderErrorDiagnosticWidgetCreator = std::function<QWidget*()>;
+
 private:
     void updateFunctionDeclDefLink();
     void updateFunctionDeclDefLinkNow();
@@ -118,10 +126,12 @@ private:
 
     void onCodeWarningsUpdated(unsigned revision,
                                const QList<QTextEdit::ExtraSelection> selections,
+                               const HeaderErrorDiagnosticWidgetCreator &creator,
                                const TextEditor::RefactorMarkers &refactorMarkers);
     void onIfdefedOutBlocksUpdated(unsigned revision,
                                    const QList<TextEditor::BlockRange> ifdefedOutBlocks);
 
+    void updateHeaderErrorWidgets();
     void updateSemanticInfo(const CppTools::SemanticInfo &semanticInfo,
                             bool updateUseSelectionSynchronously = false);
     void updatePreprocessorButtonTooltip();
@@ -140,6 +150,8 @@ private:
     void renameSymbolUnderCursorClang();
     void renameSymbolUnderCursorBuiltin();
 
+    void addHeaderErrorInfoBarEntryAndHideIndicator() const;
+
     CppTools::ProjectPart *projectPart() const;
 
 private:

src/plugins/cppeditor/cppeditorconstants.h

@@ -36,6 +36,7 @@ const char OPEN_DECLARATION_DEFINITION_IN_NEXT_SPLIT[] = "CppEditor.OpenDeclarat
 const char RENAME_SYMBOL_UNDER_CURSOR[] = "CppEditor.RenameSymbolUnderCursor";
 const char FIND_USAGES[] = "CppEditor.FindUsages";
 const char OPEN_PREPROCESSOR_DIALOG[] = "CppEditor.OpenPreprocessorDialog";
+const char ERRORS_IN_HEADER_FILES[] = "CppEditor.ErrorsInHeaderFiles";
 const char M_REFACTORING_MENU_INSERTION_POINT[] = "CppEditor.RefactorGroup";
 const char UPDATE_CODEMODEL[] = "CppEditor.UpdateCodeModel";
 const char INSPECT_CPP_CODEMODEL[] = "CppEditor.InspectCppCodeModel";

src/plugins/cppeditor/cppeditordocument.cpp

@@ -230,12 +230,14 @@ void CppEditorDocument::scheduleProcessDocument()
 {
     m_processorRevision = document()->revision();
     m_processorTimer.start();
+    processor()->editorDocumentTimerRestarted();
 }
 
 void CppEditorDocument::processDocument()
 {
     if (processor()->isParserRunning() || m_processorRevision != contentsRevision()) {
         m_processorTimer.start();
+        processor()->editorDocumentTimerRestarted();
         return;
     }
 

src/plugins/cppeditor/cppeditordocument.h

@@ -59,9 +59,13 @@ public:
                                  const QByteArray &defines);
     void scheduleProcessDocument();
 
+public:
+    using HeaderErrorDiagnosticWidgetCreator = std::function<QWidget*()>;
+
 signals:
     void codeWarningsUpdated(unsigned contentsRevision,
                              const QList<QTextEdit::ExtraSelection> selections,
+                             const HeaderErrorDiagnosticWidgetCreator &creator,
                              const TextEditor::RefactorMarkers &refactorMarkers);
 
     void ifdefedOutBlocksUpdated(unsigned contentsRevision,

src/plugins/cpptools/baseeditordocumentprocessor.cpp

@@ -67,6 +67,10 @@ void BaseEditorDocumentProcessor::addDiagnosticToolTipToLayout(uint, uint, QLayo
 {
 }
 
+void BaseEditorDocumentProcessor::editorDocumentTimerRestarted()
+{
+}
+
 void BaseEditorDocumentProcessor::runParser(QFutureInterface<void> &future,
                                             BaseEditorDocumentParser::Ptr parser,
                                             const WorkingCopy workingCopy)

src/plugins/cpptools/baseeditordocumentprocessor.h

@@ -37,6 +37,8 @@
 
 #include <QTextEdit>
 
+#include <functional>
+
 namespace TextEditor {
 class TextDocument;
 class QuickFixOperations;
@@ -67,10 +69,17 @@ public:
     virtual bool hasDiagnosticsAt(uint line, uint column) const;
     virtual void addDiagnosticToolTipToLayout(uint line, uint column, QLayout *layout) const;
 
+    virtual void editorDocumentTimerRestarted();
+
+public:
+    using HeaderErrorDiagnosticWidgetCreator = std::function<QWidget*()>;
+
 signals:
+
     // Signal interface to implement
     void codeWarningsUpdated(unsigned revision,
                              const QList<QTextEdit::ExtraSelection> selections,
+                             const HeaderErrorDiagnosticWidgetCreator &creator,
                              const TextEditor::RefactorMarkers &refactorMarkers);
 
     void ifdefedOutBlocksUpdated(unsigned revision,

src/plugins/cpptools/builtineditordocumentprocessor.cpp

@@ -310,7 +310,10 @@ void BuiltinEditorDocumentProcessor::onCodeWarningsUpdated(
 
     m_codeWarnings += toTextEditorSelections(codeWarnings, textDocument());
     m_codeWarningsUpdated = true;
-    emit codeWarningsUpdated(revision(), m_codeWarnings, TextEditor::RefactorMarkers());
+    emit codeWarningsUpdated(revision(),
+                             m_codeWarnings,
+                             HeaderErrorDiagnosticWidgetCreator(),
+                             TextEditor::RefactorMarkers());
 }
 
 SemanticInfo::Source BuiltinEditorDocumentProcessor::createSemanticInfoSource(bool force) const

src/plugins/help/helpplugin.cpp

@@ -622,8 +622,8 @@ void HelpPlugin::handleHelpRequest(const QUrl &url, HelpManager::HelpViewerLocat
     if (HelpViewer::launchWithExternalApp(url))
         return;
 
-    QString address = url.toString();
     if (!HelpManager::findFile(url).isValid()) {
+        const QString address = url.toString();
         if (address.startsWith("qthelp://org.qt-project.")
                 || address.startsWith("qthelp://com.nokia.")
                 || address.startsWith("qthelp://com.trolltech.")) {
@@ -633,14 +633,14 @@ void HelpPlugin::handleHelpRequest(const QUrl &url, HelpManager::HelpViewerLocat
                 urlPrefix.append(QString::fromLatin1("qtcreator"));
             else
                 urlPrefix.append("qt-5");
-            address = urlPrefix + address.mid(address.lastIndexOf(QLatin1Char('/')));
+            QDesktopServices::openUrl(QUrl(urlPrefix + address.mid(address.lastIndexOf(QLatin1Char('/')))));
+            return;
         }
     }
 
-    const QUrl newUrl(address);
     HelpViewer *viewer = viewerForHelpViewerLocation(location);
     QTC_ASSERT(viewer, return);
-    viewer->setSource(newUrl);
+    viewer->setSource(url);
     ICore::raiseWindow(viewer);
 }
 

src/plugins/help/macwebkithelpviewer.mm

@@ -169,7 +169,7 @@ static QPoint flipPoint(const NSPoint &p)
 
     NSURL *resolvedURL = data.resolvedUrl.toNSURL();
     NSString *mimeType = data.mimeType.toNSString();
-    NSData *nsdata = QtMac::toNSData(data.data); // Qt 5.3 has this in QByteArray
+    NSData *nsdata = data.data.toNSData();
     NSURLResponse *response = [[NSURLResponse alloc] initWithURL:resolvedURL
                                                         MIMEType:mimeType
                                            expectedContentLength:data.data.length()

src/plugins/help/remotehelpfilter.cpp

@@ -93,7 +93,8 @@ RemoteHelpFilter::RemoteHelpFilter()
     m_remoteUrls.append("https://www.bing.com/search?q=%1");
     m_remoteUrls.append("https://www.google.com/search?q=%1");
     m_remoteUrls.append("https://search.yahoo.com/search?p=%1");
-    m_remoteUrls.append("https://www.cplusplus.com/reference/stl/%1");
+    m_remoteUrls.append("https://stackoverflow.com/search?q=%1");
+    m_remoteUrls.append("http://en.cppreference.com/mwiki/index.php?title=Special%3ASearch&search=%1");
     m_remoteUrls.append("https://en.wikipedia.org/w/index.php?search=%1");
 }
 

src/plugins/projectexplorer/jsonwizard/jsonfieldpage.cpp

@@ -404,6 +404,7 @@ bool LineEditField::parseData(const QVariant &data, QString *errorMessage)
 
     QVariantMap tmp = data.toMap();
 
+    m_isPassword = tmp.value("isPassword", false).toBool();
     m_defaultText = JsonWizardFactory::localizedString(tmp.value(QLatin1String("trText")).toString());
     m_disabledText = JsonWizardFactory::localizedString(tmp.value(QLatin1String("trDisabledText")).toString());
     m_placeholderText = JsonWizardFactory::localizedString(tmp.value(QLatin1String("trPlaceholder")).toString());
@@ -439,6 +440,8 @@ QWidget *LineEditField::createWidget(const QString &displayName, JsonFieldPage *
     if (!m_historyId.isEmpty())
         w->setHistoryCompleter(m_historyId, m_restoreLastHistoryItem);
 
+    w->setEchoMode(m_isPassword ? QLineEdit::Password : QLineEdit::Normal);
+
     return w;
 }
 

src/plugins/projectexplorer/jsonwizard/jsonfieldpage_p.h

@@ -105,6 +105,7 @@ private:
     bool m_isModified;
     bool m_isValidating;
     bool m_restoreLastHistoryItem;
+    bool m_isPassword;
     QString m_placeholderText;
     QString m_defaultText;
     QString m_disabledText;

src/plugins/qmakeprojectmanager/wizards/qtprojectparameters.cpp

@@ -93,6 +93,7 @@ void QtProjectParameters::writeProFile(QTextStream &str) const
     case ConsoleApp:
         // Mac: Command line apps should not be bundles
         str << "CONFIG   += console\nCONFIG   -= app_bundle\n\n";
+        // fallthrough
     case GuiApp:
         str << "TEMPLATE = app\n";
         break;

src/plugins/texteditor/texteditorconstants.cpp

@@ -102,6 +102,7 @@ const char *nameForStyle(TextStyle style)
     case C_WARNING_CONTEXT:     return "WarningContext";
 
     case C_DECLARATION: return "Declaration";
+    case C_OUTPUT_ARGUMENT:    return "C_OUTPUT_ARGUMENT";
 
     case C_LAST_STYLE_SENTINEL: return "LastStyleSentinel";
     }

src/plugins/texteditor/texteditorconstants.h

@@ -100,6 +100,7 @@ enum TextStyle : quint8 {
     C_ERROR_CONTEXT,
 
     C_DECLARATION,
+    C_OUTPUT_ARGUMENT,
 
     C_LAST_STYLE_SENTINEL
 };

src/plugins/texteditor/texteditorsettings.cpp

@@ -313,6 +313,10 @@ TextEditorSettings::TextEditorSettings(QObject *parent)
                              tr("Declaration"),
                              tr("Declaration of a function, variable, and so on."),
                              FormatDescription::ShowFontUnderlineAndRelativeControls);
+    formatDescr.emplace_back(C_OUTPUT_ARGUMENT,
+                             tr("Output Argument"),
+                             tr("Writable arguments of a function call."),
+                             FormatDescription::ShowFontUnderlineAndRelativeControls);
 
     d->m_fontSettingsPage = new FontSettingsPage(formatDescr,
                                                    Constants::TEXT_EDITOR_FONT_SETTINGS,

src/plugins/valgrind/memchecktool.cpp

@@ -711,10 +711,11 @@ public:
         return m_tool->createRunControl(runConfiguration, mode);
     }
 
-    IRunConfigurationAspect *createRunConfigurationAspect(ProjectExplorer::RunConfiguration *rc) override
-    {
-        return createValgrindRunConfigurationAspect(rc);
-    }
+    // Do not create an aspect, let the Callgrind tool create one and use that, too.
+//    IRunConfigurationAspect *createRunConfigurationAspect(ProjectExplorer::RunConfiguration *rc) override
+//    {
+//        return createValgrindRunConfigurationAspect(rc);
+//    }
 
 public:
     MemcheckTool *m_tool;

src/tools/clangbackend/ipcsource/clangasyncjob.h

@@ -64,6 +64,11 @@ public:
         return future;
     }
 
+    void preventFinalization() override
+    {
+        m_futureWatcher.disconnect();
+    }
+
 private:
     Runner m_runner;
     QFutureWatcher<Result> m_futureWatcher;

src/tools/clangbackend/ipcsource/clangbackend_global.h

@@ -0,0 +1,37 @@
+/****************************************************************************
+**
+** 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.
+**
+****************************************************************************/
+
+#pragma once
+
+namespace ClangBackEnd {
+
+enum class PreferredTranslationUnit
+{
+    RecentlyParsed,
+    PreviouslyParsed,
+    LastUninitialized,
+};
+
+} // namespace ClangBackEnd

src/tools/clangbackend/ipcsource/clangbackendclangipc-source.pri

@@ -29,6 +29,7 @@ HEADERS += $$PWD/clangcodemodelserver.h \
     $$PWD/highlightingmarksiterator.h \
     $$PWD/utf8positionfromlinecolumn.h \
     $$PWD/clangasyncjob.h \
+    $$PWD/clangbackend_global.h \
     $$PWD/clangcompletecodejob.h \
     $$PWD/clangcreateinitialdocumentpreamblejob.h \
     $$PWD/clangfilepath.h \
@@ -41,7 +42,14 @@ HEADERS += $$PWD/clangcodemodelserver.h \
     $$PWD/clangtranslationunit.h \
     $$PWD/clangunsavedfilesshallowarguments.h \
     $$PWD/clangupdatedocumentannotationsjob.h \
-    $$PWD/clangexceptions.h
+    $$PWD/clangexceptions.h \
+    $$PWD/clangdocumentprocessor.h \
+    $$PWD/clangdocumentprocessors.h \
+    $$PWD/clangtranslationunits.h \
+    $$PWD/clangclock.h \
+    $$PWD/clangsupportivetranslationunitinitializer.h \
+    $$PWD/clangparsesupportivetranslationunitjob.h \
+    $$PWD/clangreparsesupportivetranslationunitjob.h \
 
 SOURCES += $$PWD/clangcodemodelserver.cpp \
     $$PWD/codecompleter.cpp \
@@ -80,4 +88,10 @@ SOURCES += $$PWD/clangcodemodelserver.cpp \
     $$PWD/clangtranslationunit.cpp \
     $$PWD/clangunsavedfilesshallowarguments.cpp \
     $$PWD/clangupdatedocumentannotationsjob.cpp \
-    $$PWD/clangexceptions.cpp
+    $$PWD/clangexceptions.cpp \
+    $$PWD/clangdocumentprocessor.cpp \
+    $$PWD/clangdocumentprocessors.cpp \
+    $$PWD/clangtranslationunits.cpp \
+    $$PWD/clangsupportivetranslationunitinitializer.cpp \
+    $$PWD/clangparsesupportivetranslationunitjob.cpp \
+    $$PWD/clangreparsesupportivetranslationunitjob.cpp \

src/tools/clangbackend/ipcsource/clangclock.h

@@ -0,0 +1,36 @@
+/****************************************************************************
+**
+** 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.
+**
+****************************************************************************/
+
+#pragma once
+
+#include <chrono>
+
+namespace ClangBackEnd {
+
+using Clock = std::chrono::steady_clock;
+using Duration = std::chrono::steady_clock::duration;
+using TimePoint = std::chrono::steady_clock::time_point;
+
+} // namespace ClangBackEnd

src/tools/clangbackend/ipcsource/clangcodemodelserver.cpp

@@ -27,6 +27,7 @@
 
 #include "clangdocuments.h"
 #include "clangfilesystemwatcher.h"
+#include "clangtranslationunits.h"
 #include "codecompleter.h"
 #include "diagnosticset.h"
 #include "highlightingmarks.h"
@@ -126,10 +127,16 @@ void ClangCodeModelServer::updateTranslationUnitsForEditor(const UpdateTranslati
     try {
         const auto newerFileContainers = documents.newerFileContainers(message.fileContainers());
         if (newerFileContainers.size() > 0) {
-            documents.update(newerFileContainers);
+            const std::vector<Document> updateDocuments = documents.update(newerFileContainers);
             unsavedFiles.createOrUpdate(newerFileContainers);
 
-            updateDocumentAnnotationsTimer.start(updateDocumentAnnotationsTimeOutInMs);
+            // Start the jobs on the next event loop iteration since otherwise
+            // we might block the translation unit for a completion request
+            // that comes right after this message.
+            updateDocumentAnnotationsTimer.start(0);
+            QTimer::singleShot(0, [this, updateDocuments](){
+                startInitializingSupportiveTranslationUnits(updateDocuments);
+            });
         }
     } catch (const std::exception &exception) {
         qWarning() << "Error in ClangCodeModelServer::updateTranslationUnitsForEditor:" << exception.what();
@@ -141,6 +148,10 @@ void ClangCodeModelServer::unregisterTranslationUnitsForEditor(const ClangBackEn
     TIME_SCOPE_DURATION("ClangCodeModelServer::unregisterTranslationUnitsForEditor");
 
     try {
+        for (const auto &fileContainer : message.fileContainers()) {
+            const Document &document = documents.document(fileContainer);
+            documentProcessors().remove(document);
+        }
         documents.remove(message.fileContainers());
         unsavedFiles.remove(message.fileContainers());
     } catch (const std::exception &exception) {
@@ -211,8 +222,9 @@ void ClangCodeModelServer::completeCode(const ClangBackEnd::CompleteCodeMessage
         jobRequest.column = message.column();
         jobRequest.ticketNumber = message.ticketNumber();
 
-        jobs().add(jobRequest);
-        jobs().process();
+        DocumentProcessor processor = documentProcessors().processor(document);
+        processor.addJob(jobRequest);
+        processor.process();
     }  catch (const std::exception &exception) {
         qWarning() << "Error in ClangCodeModelServer::completeCode:" << exception.what();
     }
@@ -229,8 +241,9 @@ void ClangCodeModelServer::requestDocumentAnnotations(const RequestDocumentAnnot
         const JobRequest jobRequest = createJobRequest(document,
                                                        JobRequest::Type::RequestDocumentAnnotations);
 
-        jobs().add(jobRequest);
-        jobs().process();
+        DocumentProcessor processor = documentProcessors().processor(document);
+        processor.addJob(jobRequest);
+        processor.process();
     }  catch (const std::exception &exception) {
         qWarning() << "Error in ClangCodeModelServer::requestDocumentAnnotations:" << exception.what();
     }
@@ -260,9 +273,14 @@ void ClangCodeModelServer::startDocumentAnnotationsTimerIfFileIsNotOpenAsDocumen
         updateDocumentAnnotationsTimer.start(0);
 }
 
-const Jobs &ClangCodeModelServer::jobsForTestOnly()
+QList<Jobs::RunningJob> ClangCodeModelServer::runningJobsForTestsOnly()
 {
-    return jobs();
+    return documentProcessors().runningJobs();
+}
+
+int ClangCodeModelServer::queueSizeForTestsOnly()
+{
+    return documentProcessors().queueSize();
 }
 
 bool ClangCodeModelServer::isTimerRunningForTestOnly() const
@@ -270,32 +288,55 @@ bool ClangCodeModelServer::isTimerRunningForTestOnly() const
     return updateDocumentAnnotationsTimer.isActive();
 }
 
-void ClangCodeModelServer::addJobRequestsForDirtyAndVisibleDocuments()
+void ClangCodeModelServer::processJobsForDirtyAndVisibleDocuments()
 {
     for (const auto &document : documents.documents()) {
-        if (document.isNeedingReparse() && document.isVisibleInEditor())
-            jobs().add(createJobRequest(document, JobRequest::Type::UpdateDocumentAnnotations));
+        if (document.isNeedingReparse() && document.isVisibleInEditor()) {
+            DocumentProcessor processor = documentProcessors().processor(document);
+            processor.addJob(createJobRequest(document,
+                                              JobRequest::Type::UpdateDocumentAnnotations,
+                                              PreferredTranslationUnit::PreviouslyParsed));
         }
     }
 
-void ClangCodeModelServer::processJobsForDirtyAndVisibleDocuments()
-{
-    addJobRequestsForDirtyAndVisibleDocuments();
-    jobs().process();
+    documentProcessors().process();
 }
 
 void ClangCodeModelServer::processInitialJobsForDocuments(const std::vector<Document> &documents)
 {
     for (const auto &document : documents) {
-        jobs().add(createJobRequest(document, JobRequest::Type::UpdateDocumentAnnotations));
-        jobs().add(createJobRequest(document, JobRequest::Type::CreateInitialDocumentPreamble));
+        DocumentProcessor processor = documentProcessors().create(document);
+        const auto jobRequestCreator = [this](const Document &document,
+                JobRequest::Type jobRequestType,
+                PreferredTranslationUnit preferredTranslationUnit) {
+            return createJobRequest(document, jobRequestType, preferredTranslationUnit);
+        };
+        processor.setJobRequestCreator(jobRequestCreator);
+
+        processor.addJob(createJobRequest(document, JobRequest::Type::UpdateDocumentAnnotations));
+        processor.addJob(createJobRequest(document, JobRequest::Type::CreateInitialDocumentPreamble));
+        processor.process();
+    }
 }
 
-    jobs().process();
+void ClangCodeModelServer::startInitializingSupportiveTranslationUnits(
+        const std::vector<Document> &documents)
+{
+    for (const Document &document : documents) {
+        try {
+            DocumentProcessor processor = documentProcessors().processor(document);
+            if (!processor.hasSupportiveTranslationUnit())
+                processor.startInitializingSupportiveTranslationUnit();
+        } catch (const DocumentProcessorDoesNotExist &) {
+            // OK, document was already closed.
+        }
+    }
 }
 
-JobRequest ClangCodeModelServer::createJobRequest(const Document &document,
-                                                  JobRequest::Type type) const
+JobRequest ClangCodeModelServer::createJobRequest(
+        const Document &document,
+        JobRequest::Type type,
+        PreferredTranslationUnit preferredTranslationUnit) const
 {
     JobRequest jobRequest;
     jobRequest.type = type;
@@ -304,6 +345,7 @@ JobRequest ClangCodeModelServer::createJobRequest(const Document &document,
     jobRequest.projectPartId = document.projectPartId();
     jobRequest.unsavedFilesChangeTimePoint = unsavedFiles.lastChangeTimePoint();
     jobRequest.documentRevision = document.documentRevision();
+    jobRequest.preferredTranslationUnit = preferredTranslationUnit;
     const ProjectPart &projectPart = projects.project(document.projectPartId());
     jobRequest.projectChangeTimePoint = projectPart.lastChangeTimePoint();
 
@@ -315,16 +357,16 @@ void ClangCodeModelServer::setUpdateDocumentAnnotationsTimeOutInMsForTestsOnly(i
     updateDocumentAnnotationsTimeOutInMs = value;
 }
 
-Jobs &ClangCodeModelServer::jobs()
+DocumentProcessors &ClangCodeModelServer::documentProcessors()
 {
-    if (!jobs_) {
-        // Jobs needs a reference to the client, but the client is not known at
-        // construction time of ClangCodeModelServer, so construct Jobs in a
-        // lazy manner.
-        jobs_.reset(new Jobs(documents, unsavedFiles, projects, *client()));
+    if (!documentProcessors_) {
+        // DocumentProcessors needs a reference to the client, but the client
+        // is not known at construction time of ClangCodeModelServer, so
+        // construct DocumentProcessors in a lazy manner.
+        documentProcessors_.reset(new DocumentProcessors(documents, unsavedFiles, projects, *client()));
     }
 
-    return *jobs_.data();
+    return *documentProcessors_.data();
 }
 
 } // namespace ClangBackEnd

src/tools/clangbackend/ipcsource/clangcodemodelserver.h

@@ -31,8 +31,9 @@
 #include "projects.h"
 #include "clangdocument.h"
 #include "clangdocuments.h"
+#include "clangdocumentprocessors.h"
+#include "clangjobrequest.h"
 #include "unsavedfiles.h"
-#include "clangjobs.h"
 
 #include <utf8string.h>
 
@@ -58,27 +59,33 @@ public:
     void updateVisibleTranslationUnits(const UpdateVisibleTranslationUnitsMessage &message) override;
     void requestDocumentAnnotations(const RequestDocumentAnnotationsMessage &message) override;
 
-public /*for tests*/:
+public: // for tests
     const Documents &documentsForTestOnly() const;
-    const Jobs &jobsForTestOnly();
+    QList<Jobs::RunningJob> runningJobsForTestsOnly();
+    int queueSizeForTestsOnly();
     bool isTimerRunningForTestOnly() const;
     void setUpdateDocumentAnnotationsTimeOutInMsForTestsOnly(int value);
+    DocumentProcessors &documentProcessors();
 
 private:
-    Jobs &jobs();
 
     void startDocumentAnnotationsTimerIfFileIsNotOpenAsDocument(const Utf8String &filePath);
     void addJobRequestsForDirtyAndVisibleDocuments();
     void processJobsForDirtyAndVisibleDocuments();
     void processInitialJobsForDocuments(const std::vector<Document> &documents);
+    void startInitializingSupportiveTranslationUnits(const std::vector<Document> &documents);
 
-    JobRequest createJobRequest(const Document &document, JobRequest::Type type) const;
+    JobRequest createJobRequest(const Document &document,
+                                JobRequest::Type type,
+                                PreferredTranslationUnit preferredTranslationUnit
+                                    = PreferredTranslationUnit::RecentlyParsed) const;
 
 private:
     ProjectParts projects;
     UnsavedFiles unsavedFiles;
     Documents documents;
-    QScopedPointer<Jobs> jobs_;
+
+    QScopedPointer<DocumentProcessors> documentProcessors_; // Delayed initialization
 
     QTimer updateDocumentAnnotationsTimer;
     int updateDocumentAnnotationsTimeOutInMs;

src/tools/clangbackend/ipcsource/clangcompletecodejob.cpp

@@ -50,29 +50,28 @@ static CompleteCodeJob::AsyncResult runAsyncHelper(const TranslationUnit &transl
     return asyncResult;
 }
 
-bool CompleteCodeJob::prepareAsyncRun()
+IAsyncJob::AsyncPrepareResult CompleteCodeJob::prepareAsyncRun()
 {
     const JobRequest jobRequest = context().jobRequest;
-    QTC_ASSERT(jobRequest.type == JobRequest::Type::CompleteCode, return false);
+    QTC_ASSERT(jobRequest.type == JobRequest::Type::CompleteCode, return AsyncPrepareResult());
 
     try {
         m_pinnedDocument = context().documentForJobRequest();
 
-        const TranslationUnit translationUnit = m_pinnedDocument.translationUnit();
+        const TranslationUnit translationUnit
+                = m_pinnedDocument.translationUnit(jobRequest.preferredTranslationUnit);
         const UnsavedFiles unsavedFiles = *context().unsavedFiles;
         const quint32 line = jobRequest.line;
         const quint32 column = jobRequest.column;
         setRunner([translationUnit, unsavedFiles, line, column]() {
             return runAsyncHelper(translationUnit, unsavedFiles, line, column);
         });
-
+        return AsyncPrepareResult{translationUnit.id()};
 
     } catch (const std::exception &exception) {
         qWarning() << "Error in CompleteCodeJob::prepareAsyncRun:" << exception.what();
-        return false;
+        return AsyncPrepareResult();
     }
-
-    return true;
 }
 
 void CompleteCodeJob::finalizeAsyncRun()

src/tools/clangbackend/ipcsource/clangcompletecodejob.h

@@ -43,7 +43,7 @@ class CompleteCodeJob : public AsyncJob<CompleteCodeJobResult>
 public:
     using AsyncResult = CompleteCodeJobResult;
 
-    bool prepareAsyncRun() override;
+    AsyncPrepareResult prepareAsyncRun() override;
     void finalizeAsyncRun() override;
 
 private:

src/tools/clangbackend/ipcsource/clangcreateinitialdocumentpreamblejob.cpp

@@ -39,28 +39,28 @@ static void runAsyncHelper(const TranslationUnit &translationUnit,
     translationUnit.reparse(translationUnitUpdateInput);
 }
 
-bool CreateInitialDocumentPreambleJob::prepareAsyncRun()
+IAsyncJob::AsyncPrepareResult CreateInitialDocumentPreambleJob::prepareAsyncRun()
 {
     const JobRequest jobRequest = context().jobRequest;
-    QTC_ASSERT(jobRequest.type == JobRequest::Type::CreateInitialDocumentPreamble, return false);
+    QTC_ASSERT(jobRequest.type == JobRequest::Type::CreateInitialDocumentPreamble, return AsyncPrepareResult());
 
     try {
         m_pinnedDocument = context().documentForJobRequest();
         m_pinnedFileContainer = m_pinnedDocument.fileContainer();
 
-        const TranslationUnit translationUnit = m_pinnedDocument.translationUnit();
+        const TranslationUnit translationUnit
+                = m_pinnedDocument.translationUnit(jobRequest.preferredTranslationUnit);
         const TranslationUnitUpdateInput updateInput = m_pinnedDocument.createUpdateInput();
         setRunner([translationUnit, updateInput]() {
             return runAsyncHelper(translationUnit, updateInput);
         });
+        return AsyncPrepareResult{translationUnit.id()};
 
     } catch (const std::exception &exception) {
         qWarning() << "Error in CreateInitialDocumentPreambleJob::prepareAsyncRun:"
                    << exception.what();
-        return false;
+        return AsyncPrepareResult();
     }
-
-    return true;
 }
 
 void CreateInitialDocumentPreambleJob::finalizeAsyncRun()

src/tools/clangbackend/ipcsource/clangcreateinitialdocumentpreamblejob.h

@@ -33,7 +33,7 @@ namespace ClangBackEnd {
 class CreateInitialDocumentPreambleJob : public AsyncJob<void>
 {
 public:
-    bool prepareAsyncRun() override;
+    AsyncPrepareResult prepareAsyncRun() override;
     void finalizeAsyncRun() override;
 
 private:

src/tools/clangbackend/ipcsource/clangdocument.cpp

@@ -32,6 +32,7 @@
 #include "projectpart.h"
 #include "clangexceptions.h"
 #include "clangtranslationunit.h"
+#include "clangtranslationunits.h"
 #include "clangtranslationunitupdater.h"
 #include "unsavedfiles.h"
 #include "unsavedfile.h"
@@ -62,15 +63,14 @@ public:
     const Utf8StringVector fileArguments;
 
     ProjectPart projectPart;
-    time_point lastProjectPartChangeTimePoint;
+    TimePoint lastProjectPartChangeTimePoint;
 
-    CXTranslationUnit translationUnit = nullptr;
-    CXIndex index = nullptr;
+    TranslationUnits translationUnits;
 
     QSet<Utf8String> dependedFilePaths;
 
     uint documentRevision = 0;
-    time_point needsToBeReparsedChangeTimePoint;
+    TimePoint needsToBeReparsedChangeTimePoint;
     bool hasParseOrReparseFailed = false;
     bool needsToBeReparsed = false;
     bool isUsedByCurrentEditor = false;
@@ -85,16 +85,16 @@ DocumentData::DocumentData(const Utf8String &filePath,
       filePath(filePath),
       fileArguments(fileArguments),
       projectPart(projectPart),
-      lastProjectPartChangeTimePoint(std::chrono::steady_clock::now()),
+      lastProjectPartChangeTimePoint(Clock::now()),
+      translationUnits(filePath),
       needsToBeReparsedChangeTimePoint(lastProjectPartChangeTimePoint)
 {
     dependedFilePaths.insert(filePath);
+    translationUnits.createAndAppend();
 }
 
 DocumentData::~DocumentData()
 {
-    clang_disposeTranslationUnit(translationUnit);
-    clang_disposeIndex(index);
 }
 
 Document::Document(const Utf8String &filePath,
@@ -183,7 +183,7 @@ const ProjectPart &Document::projectPart() const
     return d->projectPart;
 }
 
-const time_point Document::lastProjectPartChangeTimePoint() const
+const TimePoint Document::lastProjectPartChangeTimePoint() const
 {
     checkIfNull();
 
@@ -239,7 +239,7 @@ void Document::setIsVisibleInEditor(bool isVisibleInEditor)
     d->isVisibleInEditor = isVisibleInEditor;
 }
 
-time_point Document::isNeededReparseChangeTimePoint() const
+TimePoint Document::isNeededReparseChangeTimePoint() const
 {
     checkIfNull();
 
@@ -282,8 +282,13 @@ TranslationUnitUpdateInput Document::createUpdateInput() const
 
 TranslationUnitUpdater Document::createUpdater() const
 {
+    TranslationUnit unit = translationUnit();
+
     const TranslationUnitUpdateInput updateInput = createUpdateInput();
-    TranslationUnitUpdater updater(d->index, d->translationUnit, updateInput);
+    TranslationUnitUpdater updater(unit.id(),
+                                   unit.cxIndex(),
+                                   unit.cxTranslationUnit(),
+                                   updateInput);
 
     return updater;
 }
@@ -304,9 +309,13 @@ void Document::incorporateUpdaterResult(const TranslationUnitUpdateResult &resul
     if (result.hasParsed())
         d->lastProjectPartChangeTimePoint = result.parseTimePoint;
 
-    if (result.hasParsed() || result.hasReparsed())
+    if (result.hasParsed() || result.hasReparsed()) {
         d->dependedFilePaths = result.dependedOnFilePaths;
 
+        const TimePoint timePoint = qMax(result.parseTimePoint, result.reparseTimePoint);
+        d->translationUnits.updateParseTimePoint(result.translationUnitId, timePoint);
+    }
+
     d->documents.addWatchedFiles(d->dependedFilePaths);
 
     if (result.hasReparsed()
@@ -315,11 +324,16 @@ void Document::incorporateUpdaterResult(const TranslationUnitUpdateResult &resul
     }
 }
 
-TranslationUnit Document::translationUnit() const
+TranslationUnit Document::translationUnit(PreferredTranslationUnit preferredTranslationUnit) const
 {
     checkIfNull();
 
-    return TranslationUnit(d->filePath, d->index, d->translationUnit);
+    return d->translationUnits.get(preferredTranslationUnit);
+}
+
+TranslationUnits &Document::translationUnits() const
+{
+    return d->translationUnits;
 }
 
 void Document::parse() const
@@ -352,7 +366,7 @@ const QSet<Utf8String> Document::dependedFilePaths() const
 
 void Document::setDirty()
 {
-    d->needsToBeReparsedChangeTimePoint = std::chrono::steady_clock::now();
+    d->needsToBeReparsedChangeTimePoint = Clock::now();
     d->needsToBeReparsed = true;
 }
 

src/tools/clangbackend/ipcsource/clangdocument.h

@@ -27,6 +27,7 @@
 
 #include "clangtranslationunitupdater.h"
 
+#include "clangbackend_global.h"
 #include "clangtranslationunit.h"
 
 #include <utf8stringvector.h>
@@ -36,7 +37,6 @@
 #include <QSet>
 #include <QtGlobal>
 
-#include <chrono>
 #include <memory>
 
 class Utf8String;
@@ -44,14 +44,13 @@ class Utf8String;
 namespace ClangBackEnd {
 
 class TranslationUnit;
+class TranslationUnits;
 class DocumentData;
 class TranslationUnitUpdateResult;
 class ProjectPart;
 class FileContainer;
 class Documents;
 
-using time_point = std::chrono::steady_clock::time_point;
-
 class Document
 {
 public:
@@ -85,7 +84,7 @@ public:
 
     Utf8String projectPartId() const;
     const ProjectPart &projectPart() const;
-    const time_point lastProjectPartChangeTimePoint() const;
+    const TimePoint lastProjectPartChangeTimePoint() const;
     bool isProjectPartOutdated() const;
 
     uint documentRevision() const;
@@ -104,7 +103,9 @@ public:
     TranslationUnitUpdateInput createUpdateInput() const;
     void incorporateUpdaterResult(const TranslationUnitUpdateResult &result) const;
 
-    TranslationUnit translationUnit() const;
+    TranslationUnit translationUnit(PreferredTranslationUnit preferredTranslationUnit
+                                        = PreferredTranslationUnit::RecentlyParsed) const;
+    TranslationUnits &translationUnits() const;
 
 public: // for tests
     void parse() const;
@@ -112,7 +113,7 @@ public: // for tests
     const QSet<Utf8String> dependedFilePaths() const;
     TranslationUnitUpdater createUpdater() const;
     void setHasParseOrReparseFailed(bool hasFailed);
-    time_point isNeededReparseChangeTimePoint() const;
+    TimePoint isNeededReparseChangeTimePoint() const;
 
 private:
     void setDirty();

src/tools/clangbackend/ipcsource/clangdocumentprocessor.cpp

@@ -0,0 +1,128 @@
+/****************************************************************************
+**
+** 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 "clangdocumentprocessor.h"
+
+#include "clangdocuments.h"
+#include "clangjobs.h"
+#include "clangsupportivetranslationunitinitializer.h"
+
+#include "clangdocument.h"
+#include "clangtranslationunits.h"
+
+#include <utils/qtcassert.h>
+
+namespace ClangBackEnd {
+
+class DocumentProcessorData
+{
+public:
+    DocumentProcessorData(const Document &document,
+                          Documents &documents,
+                          UnsavedFiles &unsavedFiles,
+                          ProjectParts &projects,
+                          ClangCodeModelClientInterface &client)
+        : document(document)
+        , documents(documents)
+        , jobs(documents, unsavedFiles, projects, client)
+        , supportiveTranslationUnitInitializer(document, jobs)
+    {
+        const auto isDocumentClosedChecker = [this](const Utf8String &filePath,
+                                                    const Utf8String &projectPartId) {
+            return !this->documents.hasDocument(filePath, projectPartId);
+        };
+        supportiveTranslationUnitInitializer.setIsDocumentClosedChecker(isDocumentClosedChecker);
+    }
+
+public:
+    Document document;
+    Documents &documents;
+    Jobs jobs;
+
+    SupportiveTranslationUnitInitializer supportiveTranslationUnitInitializer;
+    JobRequestCreator jobRequestCreator;
+};
+
+DocumentProcessor::DocumentProcessor(const Document &document,
+                                     Documents &documents,
+                                     UnsavedFiles &unsavedFiles,
+                                     ProjectParts &projects,
+                                     ClangCodeModelClientInterface &client)
+    : d(std::make_shared<DocumentProcessorData>(document,
+                                                documents,
+                                                unsavedFiles,
+                                                projects,
+                                                client))
+{
+}
+
+void DocumentProcessor::setJobRequestCreator(const JobRequestCreator &creator)
+{
+    d->supportiveTranslationUnitInitializer.setJobRequestCreator(creator);
+}
+
+void DocumentProcessor::addJob(const JobRequest &jobRequest)
+{
+    d->jobs.add(jobRequest);
+}
+
+JobRequests DocumentProcessor::process()
+{
+    return d->jobs.process();
+}
+
+Document DocumentProcessor::document() const
+{
+    return d->document;
+}
+
+bool DocumentProcessor::hasSupportiveTranslationUnit() const
+{
+    return d->supportiveTranslationUnitInitializer.state()
+        != SupportiveTranslationUnitInitializer::State::NotInitialized;
+}
+
+void DocumentProcessor::startInitializingSupportiveTranslationUnit()
+{
+    d->supportiveTranslationUnitInitializer.startInitializing();
+}
+
+bool DocumentProcessor::isSupportiveTranslationUnitInitialized() const
+{
+    return d->supportiveTranslationUnitInitializer.state()
+        == SupportiveTranslationUnitInitializer::State::Initialized;
+}
+
+QList<Jobs::RunningJob> DocumentProcessor::runningJobs() const
+{
+    return d->jobs.runningJobs();
+}
+
+int DocumentProcessor::queueSize() const
+{
+    return d->jobs.queue().size();
+}
+
+} // namespace ClangBackEnd

src/tools/clangbackend/ipcsource/clangdocumentprocessor.h

@@ -0,0 +1,71 @@
+/****************************************************************************
+**
+** 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.
+**
+****************************************************************************/
+
+#pragma once
+
+#include "clangjobrequest.h"
+#include "clangjobs.h"
+
+#include <memory>
+
+namespace ClangBackEnd {
+
+class ClangCodeModelClientInterface;
+class Document;
+class Documents;
+class DocumentProcessorData;
+class JobRequest;
+class ProjectParts;
+class UnsavedFiles;
+
+class DocumentProcessor
+{
+public:
+    DocumentProcessor(const Document &document,
+                      Documents &documents,
+                      UnsavedFiles &unsavedFiles,
+                      ProjectParts &projects,
+                      ClangCodeModelClientInterface &client);
+
+    void setJobRequestCreator(const JobRequestCreator &creator);
+
+    void addJob(const JobRequest &jobRequest);
+    JobRequests process();
+
+    Document document() const;
+
+    bool hasSupportiveTranslationUnit() const;
+    void startInitializingSupportiveTranslationUnit();
+
+public: // for tests
+    bool isSupportiveTranslationUnitInitialized() const;
+    QList<Jobs::RunningJob> runningJobs() const;
+    int queueSize() const;
+
+private:
+    std::shared_ptr<DocumentProcessorData> d;
+};
+
+} // namespace ClangBackEnd

src/tools/clangbackend/ipcsource/clangdocumentprocessors.cpp

@@ -0,0 +1,113 @@
+/****************************************************************************
+**
+** 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 "clangdocumentprocessors.h"
+#include "clangdocument.h"
+#include "clangexceptions.h"
+
+namespace ClangBackEnd {
+
+DocumentProcessors::DocumentProcessors(Documents &documents,
+                                       UnsavedFiles &unsavedFiles,
+                                       ProjectParts &projects,
+                                       ClangCodeModelClientInterface &client)
+    : m_documents(documents)
+    , m_unsavedFiles(unsavedFiles)
+    , m_projects(projects)
+    , m_client(client)
+{
+}
+
+static bool operator<(const DocumentId &lhs, const DocumentId &rhs)
+{
+    return lhs.filePath < rhs.filePath
+        || (lhs.filePath == rhs.filePath && lhs.projectPartId < lhs.projectPartId);
+}
+
+DocumentProcessor DocumentProcessors::create(const Document &document)
+{
+    const DocumentId id{document.filePath(), document.projectPartId()};
+    if (m_processors.contains(id))
+        throw DocumentProcessorAlreadyExists(document.filePath(), document.projectPartId());
+
+    const DocumentProcessor element(document, m_documents, m_unsavedFiles, m_projects, m_client);
+    m_processors.insert(id, element);
+
+    return element;
+}
+
+DocumentProcessor DocumentProcessors::processor(const Document &document)
+{
+    const DocumentId id{document.filePath(), document.projectPartId()};
+
+    const auto it = m_processors.find(id);
+    if (it == m_processors.end())
+        throw DocumentProcessorDoesNotExist(document.filePath(), document.projectPartId());
+
+    return *it;
+}
+
+QList<DocumentProcessor> DocumentProcessors::processors() const
+{
+    return m_processors.values();
+}
+
+void DocumentProcessors::remove(const Document &document)
+{
+    const DocumentId id{document.filePath(), document.projectPartId()};
+
+    const int itemsRemoved = m_processors.remove(id);
+    if (itemsRemoved != 1)
+        throw DocumentProcessorDoesNotExist(document.filePath(), document.projectPartId());
+}
+
+JobRequests DocumentProcessors::process()
+{
+    JobRequests jobsStarted;
+    for (auto &processor : m_processors)
+        jobsStarted += processor.process();
+
+    return jobsStarted;
+}
+
+QList<Jobs::RunningJob> DocumentProcessors::runningJobs() const
+{
+    QList<Jobs::RunningJob> jobs;
+    for (auto &processor : m_processors)
+        jobs += processor.runningJobs();
+
+    return jobs;
+}
+
+int DocumentProcessors::queueSize() const
+{
+    int total = 0;
+    for (auto &processor : m_processors)
+        total += processor.queueSize();
+
+    return total;
+}
+
+} // namespace ClangBackEnd

src/tools/clangbackend/ipcsource/clangdocumentprocessors.h

@@ -0,0 +1,74 @@
+/****************************************************************************
+**
+** 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.
+**
+****************************************************************************/
+
+#pragma once
+
+#include "clangdocumentprocessor.h"
+#include "clangjobs.h"
+
+#include <utf8string.h>
+
+#include <QMap>
+
+namespace ClangBackEnd {
+
+class Document;
+class DocumentProcessor;
+
+class DocumentId {
+public:
+    Utf8String filePath;
+    Utf8String projectPartId;
+};
+
+class DocumentProcessors
+{
+public:
+    DocumentProcessors(Documents &documents,
+                       UnsavedFiles &unsavedFiles,
+                       ProjectParts &projects,
+                       ClangCodeModelClientInterface &client);
+
+    DocumentProcessor create(const Document &document);
+    DocumentProcessor processor(const Document &document);
+    void remove(const Document &document);
+
+    JobRequests process();
+
+public: // for tests
+    QList<DocumentProcessor> processors() const;
+    QList<Jobs::RunningJob> runningJobs() const;
+    int queueSize() const;
+
+private:
+    Documents &m_documents;
+    UnsavedFiles &m_unsavedFiles;
+    ProjectParts &m_projects;
+    ClangCodeModelClientInterface &m_client;
+
+    QMap<DocumentId, DocumentProcessor> m_processors;
+};
+
+} // namespace ClangBackEnd

src/tools/clangbackend/ipcsource/clangdocuments.cpp

@@ -68,14 +68,20 @@ std::vector<Document> Documents::create(const QVector<FileContainer> &fileContai
     return createdDocuments;
 }
 
-void Documents::update(const QVector<FileContainer> &fileContainers)
+std::vector<Document> Documents::update(const QVector<FileContainer> &fileContainers)
 {
     checkIfDocumentsForFilePathsExist(fileContainers);
 
+    std::vector<Document> createdDocuments;
+
     for (const FileContainer &fileContainer : fileContainers) {
-        updateDocument(fileContainer);
+        const std::vector<Document> documents = updateDocument(fileContainer);
+        createdDocuments.insert(createdDocuments.end(), documents.begin(), documents.end());
+
         updateDocumentsWithChangedDependency(fileContainer.filePath());
     }
+
+    return createdDocuments;
 }
 
 static bool removeFromFileContainer(QVector<FileContainer> &fileContainers, const Document &document)
@@ -205,12 +211,14 @@ Document Documents::createDocument(const FileContainer &fileContainer)
     return documents_.back();
 }
 
-void Documents::updateDocument(const FileContainer &fileContainer)
+std::vector<Document> Documents::updateDocument(const FileContainer &fileContainer)
 {
     const auto documents = findAllDocumentsWithFilePath(fileContainer.filePath());
 
     for (auto document : documents)
         document.setDocumentRevision(fileContainer.documentRevision());
+
+    return documents;
 }
 
 std::vector<Document>::iterator Documents::findDocument(const FileContainer &fileContainer)

src/tools/clangbackend/ipcsource/clangdocuments.h

@@ -45,7 +45,7 @@ public:
     Documents(ProjectParts &projectParts, UnsavedFiles &unsavedFiles);
 
     std::vector<Document> create(const QVector<FileContainer> &fileContainers);
-    void update(const QVector<FileContainer> &fileContainers);
+    std::vector<Document> update(const QVector<FileContainer> &fileContainers);
     void remove(const QVector<FileContainer> &fileContainers);
 
     void setUsedByCurrentEditor(const Utf8String &filePath);
@@ -72,7 +72,7 @@ public:
 
 private:
     Document createDocument(const FileContainer &fileContainer);
-    void updateDocument(const FileContainer &fileContainer);
+    std::vector<Document> updateDocument(const FileContainer &fileContainer);
     std::vector<Document>::iterator findDocument(const FileContainer &fileContainer);
     std::vector<Document> findAllDocumentsWithFilePath(const Utf8String &filePath);
     std::vector<Document>::const_iterator findDocument(const Utf8String &filePath, const Utf8String &projectPartId) const;

src/tools/clangbackend/ipcsource/clangexceptions.cpp

@@ -74,4 +74,31 @@ DocumentIsNullException::DocumentIsNullException()
     m_info = Utf8String::fromUtf8("Tried to access a null Document!");
 }
 
+DocumentProcessorAlreadyExists::DocumentProcessorAlreadyExists(const Utf8String &filePath,
+                                                               const Utf8String &projectPartId)
+{
+    m_info = Utf8StringLiteral("Document processor for file '")
+           + filePath
+           + Utf8StringLiteral("' and project part id '")
+           + projectPartId
+           + Utf8StringLiteral("' already exists!");
+}
+
+DocumentProcessorDoesNotExist::DocumentProcessorDoesNotExist(const Utf8String &filePath,
+                                                             const Utf8String &projectPartId)
+{
+    m_info = Utf8StringLiteral("Document processor for file '")
+           + filePath
+           + Utf8StringLiteral("' and project part id '")
+           + projectPartId
+           + Utf8StringLiteral("' does not exist!");
+}
+
+TranslationUnitDoesNotExist::TranslationUnitDoesNotExist(const Utf8String &filePath)
+{
+    m_info += Utf8StringLiteral("TranslationUnit for file '")
+            + filePath
+            + Utf8StringLiteral("' does not exist.");
+}
+
 } // namespace ClangBackEnd

src/tools/clangbackend/ipcsource/clangexceptions.h

@@ -74,4 +74,24 @@ public:
     DocumentIsNullException();
 };
 
+class DocumentProcessorAlreadyExists : public ClangBaseException
+{
+public:
+    DocumentProcessorAlreadyExists(const Utf8String &filePath,
+                                   const Utf8String &projectPartId);
+};
+
+class DocumentProcessorDoesNotExist : public ClangBaseException
+{
+public:
+    DocumentProcessorDoesNotExist(const Utf8String &filePath,
+                                  const Utf8String &projectPartId);
+};
+
+class TranslationUnitDoesNotExist : public ClangBaseException
+{
+public:
+    TranslationUnitDoesNotExist(const Utf8String &filePath);
+};
+
 } // namespace ClangBackEnd

src/tools/clangbackend/ipcsource/clangiasyncjob.cpp

@@ -27,6 +27,8 @@
 
 #include "clangcompletecodejob.h"
 #include "clangcreateinitialdocumentpreamblejob.h"
+#include "clangparsesupportivetranslationunitjob.h"
+#include "clangreparsesupportivetranslationunitjob.h"
 #include "clangrequestdocumentannotationsjob.h"
 #include "clangupdatedocumentannotationsjob.h"
 
@@ -39,6 +41,10 @@ IAsyncJob *IAsyncJob::create(JobRequest::Type type)
     switch (type) {
     case JobRequest::Type::UpdateDocumentAnnotations:
         return new UpdateDocumentAnnotationsJob();
+    case JobRequest::Type::ParseSupportiveTranslationUnit:
+        return new ParseSupportiveTranslationUnitJob();
+    case JobRequest::Type::ReparseSupportiveTranslationUnit:
+        return new ReparseSupportiveTranslationUnitJob();
     case JobRequest::Type::CreateInitialDocumentPreamble:
         return new CreateInitialDocumentPreambleJob();
     case JobRequest::Type::CompleteCode:

src/tools/clangbackend/ipcsource/clangiasyncjob.h

@@ -41,6 +41,11 @@ class IAsyncJob
 public:
     static IAsyncJob *create(JobRequest::Type type);
 
+    struct AsyncPrepareResult {
+        operator bool() const { return !translationUnitId.isEmpty(); }
+        Utf8String translationUnitId;
+    };
+
 public:
     IAsyncJob();
     virtual ~IAsyncJob();
@@ -52,10 +57,12 @@ public:
     FinishedHandler finishedHandler() const;
     void setFinishedHandler(const FinishedHandler &finishedHandler);
 
-    virtual bool prepareAsyncRun() = 0;
+    virtual AsyncPrepareResult prepareAsyncRun() = 0;
     virtual QFuture<void> runAsync() = 0;
     virtual void finalizeAsyncRun() = 0;
 
+    virtual void preventFinalization() = 0;
+
 public: // for tests
     bool isFinished() const;
     void setIsFinished(bool isFinished);

src/tools/clangbackend/ipcsource/clangjobqueue.cpp

@@ -27,6 +27,7 @@
 #include "clangjobqueue.h"
 #include "clangdocument.h"
 #include "clangdocuments.h"
+#include "clangtranslationunits.h"
 #include "projects.h"
 #include "unsavedfiles.h"
 
@@ -40,11 +41,22 @@ JobQueue::JobQueue(Documents &documents, ProjectParts &projectParts)
 {
 }
 
-void JobQueue::add(const JobRequest &job)
+bool JobQueue::add(const JobRequest &job)
 {
-    qCDebug(jobsLog) << "Adding" << job;
+    if (m_queue.contains(job)) {
+        qCDebug(jobsLog) << "Not adding duplicate request" << job;
+        return false;
+    }
 
+    if (isJobRunningForJobRequest(job)) {
+        qCDebug(jobsLog) << "Not adding duplicate request for already running job" << job;
+        return false;
+    }
+
+    qCDebug(jobsLog) << "Adding" << job;
     m_queue.append(job);
+
+    return true;
 }
 
 int JobQueue::size() const
@@ -164,50 +176,65 @@ void JobQueue::prioritizeRequests()
 JobRequests JobQueue::takeJobRequestsToRunNow()
 {
     JobRequests jobsToRun;
-    QSet<DocumentId> documentsScheduledForThisRun;
+    using TranslationUnitIds = QSet<Utf8String>;
+    TranslationUnitIds translationUnitsScheduledForThisRun;
 
     QMutableVectorIterator<JobRequest> i(m_queue);
     while (i.hasNext()) {
-        const JobRequest &jobRequest = i.next();
+        const JobRequest &request = i.next();
 
         try {
-            const Document &document
-                    = m_documents.document(jobRequest.filePath,
-                                                         jobRequest.projectPartId);
-            const DocumentId documentId = DocumentId(jobRequest.filePath, jobRequest.projectPartId);
+            const Document &document = m_documents.document(request.filePath,
+                                                            request.projectPartId);
 
             if (!document.isUsedByCurrentEditor() && !document.isVisibleInEditor())
                 continue;
 
-            if (documentsScheduledForThisRun.contains(documentId))
+            const Utf8String id = document.translationUnit(request.preferredTranslationUnit).id();
+            if (translationUnitsScheduledForThisRun.contains(id))
                 continue;
 
-            if (isJobRunningForDocument(documentId))
+            if (isJobRunningForTranslationUnit(id))
                 continue;
 
-            documentsScheduledForThisRun.insert(documentId);
-            jobsToRun += jobRequest;
+            translationUnitsScheduledForThisRun.insert(id);
+            jobsToRun += request;
             i.remove();
         } catch (const std::exception &exception) {
             qWarning() << "Error in Jobs::takeJobRequestsToRunNow for"
-                       << jobRequest << ":" << exception.what();
+                       << request << ":" << exception.what();
         }
     }
 
     return jobsToRun;
 }
 
-bool JobQueue::isJobRunningForDocument(const JobQueue::DocumentId &documentId)
+bool JobQueue::isJobRunningForTranslationUnit(const Utf8String &translationUnitId)
 {
-    if (m_isJobRunningHandler)
-        return m_isJobRunningHandler(documentId.first, documentId.second);
+    if (m_isJobRunningForTranslationUnitHandler)
+        return m_isJobRunningForTranslationUnitHandler(translationUnitId);
 
     return false;
 }
 
-void JobQueue::setIsJobRunningHandler(const IsJobRunningHandler &isJobRunningHandler)
+bool JobQueue::isJobRunningForJobRequest(const JobRequest &jobRequest)
 {
-    m_isJobRunningHandler = isJobRunningHandler;
+    if (m_isJobRunningForJobRequestHandler)
+        return m_isJobRunningForJobRequestHandler(jobRequest);
+
+    return false;
+}
+
+void JobQueue::setIsJobRunningForTranslationUnitHandler(
+        const IsJobRunningForTranslationUnitHandler &isJobRunningHandler)
+{
+    m_isJobRunningForTranslationUnitHandler = isJobRunningHandler;
+}
+
+void JobQueue::setIsJobRunningForJobRequestHandler(
+        const JobQueue::IsJobRunningForJobRequestHandler &isJobRunningHandler)
+{
+    m_isJobRunningForJobRequestHandler = isJobRunningHandler;
 }
 
 JobRequests JobQueue::queue() const

src/tools/clangbackend/ipcsource/clangjobqueue.h

@@ -39,12 +39,17 @@ class JobQueue
 public:
     JobQueue(Documents &documents, ProjectParts &projects);
 
-    void add(const JobRequest &job);
+    bool add(const JobRequest &job);
 
     JobRequests processQueue();
 
-    using IsJobRunningHandler = std::function<bool(const Utf8String &, const Utf8String &)>;
-    void setIsJobRunningHandler(const IsJobRunningHandler &isJobRunningHandler);
+    using IsJobRunningForTranslationUnitHandler = std::function<bool(const Utf8String &)>;
+    void setIsJobRunningForTranslationUnitHandler(
+            const IsJobRunningForTranslationUnitHandler &isJobRunningHandler);
+
+    using IsJobRunningForJobRequestHandler = std::function<bool(const JobRequest &)>;
+    void setIsJobRunningForJobRequestHandler(
+            const IsJobRunningForJobRequestHandler &isJobRunningHandler);
 
 public: // for tests
     JobRequests queue() const;
@@ -52,8 +57,8 @@ public: // for tests
     void prioritizeRequests();
 
 private:
-    using DocumentId = QPair<Utf8String, Utf8String>;
-    bool isJobRunningForDocument(const DocumentId &documentId);
+    bool isJobRunningForTranslationUnit(const Utf8String &translationUnitId);
+    bool isJobRunningForJobRequest(const JobRequest &jobRequest);
     JobRequests takeJobRequestsToRunNow();
     void removeOutDatedRequests();
     bool isJobRequestOutDated(const JobRequest &jobRequest) const;
@@ -62,7 +67,8 @@ private:
     Documents &m_documents;
     ProjectParts &m_projectParts;
 
-    IsJobRunningHandler m_isJobRunningHandler;
+    IsJobRunningForTranslationUnitHandler m_isJobRunningForTranslationUnitHandler;
+    IsJobRunningForJobRequestHandler m_isJobRunningForJobRequestHandler;
 
     JobRequests m_queue;
 };

src/tools/clangbackend/ipcsource/clangjobrequest.cpp

@@ -25,6 +25,8 @@
 
 #include "clangjobrequest.h"
 
+#include <QFileInfo>
+
 namespace ClangBackEnd {
 
 #define RETURN_TEXT_FOR_CASE(enumValue) case JobRequest::Type::enumValue: return #enumValue
@@ -32,6 +34,8 @@ static const char *JobRequestTypeToText(JobRequest::Type type)
 {
     switch (type) {
         RETURN_TEXT_FOR_CASE(UpdateDocumentAnnotations);
+        RETURN_TEXT_FOR_CASE(ParseSupportiveTranslationUnit);
+        RETURN_TEXT_FOR_CASE(ReparseSupportiveTranslationUnit);
         RETURN_TEXT_FOR_CASE(CreateInitialDocumentPreamble);
         RETURN_TEXT_FOR_CASE(CompleteCode);
         RETURN_TEXT_FOR_CASE(RequestDocumentAnnotations);
@@ -41,6 +45,19 @@ static const char *JobRequestTypeToText(JobRequest::Type type)
 }
 #undef RETURN_TEXT_FOR_CASE
 
+#define RETURN_TEXT_FOR_CASE(enumValue) case PreferredTranslationUnit::enumValue: return #enumValue
+const char *preferredTranslationUnitToText(PreferredTranslationUnit type)
+{
+    switch (type) {
+        RETURN_TEXT_FOR_CASE(RecentlyParsed);
+        RETURN_TEXT_FOR_CASE(PreviouslyParsed);
+        RETURN_TEXT_FOR_CASE(LastUninitialized);
+    }
+
+    return "UnhandledPreferredTranslationUnitType";
+}
+#undef RETURN_TEXT_FOR_CASE
+
 QDebug operator<<(QDebug debug, JobRequest::Type type)
 {
     debug << JobRequestTypeToText(type);
@@ -53,12 +70,14 @@ QDebug operator<<(QDebug debug, const JobRequest &jobRequest)
     debug.nospace() << "Job<"
                     << jobRequest.id
                     << ","
+                    << QFileInfo(jobRequest.filePath).fileName()
+                    << ","
                     << JobRequestTypeToText(jobRequest.type)
                     << ","
-                    << jobRequest.filePath
+                    << preferredTranslationUnitToText(jobRequest.preferredTranslationUnit)
                     << ">";
 
-    return debug;
+    return debug.space();
 }
 
 JobRequest::JobRequest()
@@ -67,6 +86,23 @@ JobRequest::JobRequest()
     id = ++idCounter;
 }
 
+bool JobRequest::operator==(const JobRequest &other) const
+{
+    return type == other.type
+        && requirements == other.requirements
+
+        && filePath == other.filePath
+        && projectPartId == other.projectPartId
+        && unsavedFilesChangeTimePoint == other.unsavedFilesChangeTimePoint
+        && projectChangeTimePoint == other.projectChangeTimePoint
+        && documentRevision == other.documentRevision
+        && preferredTranslationUnit == other.preferredTranslationUnit
+
+        && line == other.line
+        && column == other.column
+        && ticketNumber == other.ticketNumber;
+}
+
 JobRequest::Requirements JobRequest::requirementsForType(Type type)
 {
     switch (type) {
@@ -77,6 +113,8 @@ JobRequest::Requirements JobRequest::requirementsForType(Type type)
                                        |JobRequest::CurrentDocumentRevision);
     case JobRequest::Type::CompleteCode:
     case JobRequest::Type::CreateInitialDocumentPreamble:
+    case JobRequest::Type::ParseSupportiveTranslationUnit:
+    case JobRequest::Type::ReparseSupportiveTranslationUnit:
         return JobRequest::Requirements(JobRequest::DocumentValid);
     }
 

src/tools/clangbackend/ipcsource/clangjobrequest.h

@@ -25,17 +25,20 @@
 
 #pragma once
 
+#include "clangbackend_global.h"
+#include "clangclock.h"
+
 #include <utf8string.h>
 
 #include <QFlags>
 #include <QDebug>
 #include <QVector>
 
-#include <chrono>
+#include <functional>
 
 namespace ClangBackEnd {
 
-using time_point = std::chrono::steady_clock::time_point;
+class Document;
 
 class JobRequest
 {
@@ -43,6 +46,10 @@ public:
     enum class Type {
         UpdateDocumentAnnotations,
         CreateInitialDocumentPreamble,
+
+        ParseSupportiveTranslationUnit,
+        ReparseSupportiveTranslationUnit,
+
         CompleteCode,
         RequestDocumentAnnotations,
     };
@@ -64,6 +71,8 @@ public:
 
     JobRequest();
 
+    bool operator==(const JobRequest &other) const;
+
 public:
     quint64 id = 0;
     Type type;
@@ -72,9 +81,10 @@ public:
     // General
     Utf8String filePath;
     Utf8String projectPartId;
-    time_point unsavedFilesChangeTimePoint;
-    time_point projectChangeTimePoint;
+    TimePoint unsavedFilesChangeTimePoint;
+    TimePoint projectChangeTimePoint;
     uint documentRevision = 0;
+    PreferredTranslationUnit preferredTranslationUnit = PreferredTranslationUnit::RecentlyParsed;
 
     // For code completion
     quint32 line = 0;
@@ -83,6 +93,9 @@ public:
 };
 
 using JobRequests = QVector<JobRequest>;
+using JobRequestCreator = std::function<JobRequest(const Document &,
+                                                   JobRequest::Type ,
+                                                   PreferredTranslationUnit)>;
 
 QDebug operator<<(QDebug debug, const JobRequest &jobRequest);
 

src/tools/clangbackend/ipcsource/clangjobs.cpp

@@ -45,17 +45,25 @@ Jobs::Jobs(Documents &documents,
     , m_client(client)
     , m_queue(documents, projectParts)
 {
-    m_queue.setIsJobRunningHandler([this](const Utf8String &filePath,
-                                          const Utf8String &projectPartId) {
-        return isJobRunning(filePath, projectPartId);
+    m_queue.setIsJobRunningForTranslationUnitHandler([this](const Utf8String &translationUnitId) {
+        return isJobRunningForTranslationUnit(translationUnitId);
+    });
+    m_queue.setIsJobRunningForJobRequestHandler([this](const JobRequest &jobRequest) {
+        return isJobRunningForJobRequest(jobRequest);
     });
 }
 
 Jobs::~Jobs()
 {
+    foreach (IAsyncJob *asyncJob, m_running.keys())
+        asyncJob->preventFinalization();
+
     QFutureSynchronizer<void> waitForFinishedJobs;
     foreach (const RunningJob &runningJob, m_running.values())
         waitForFinishedJobs.addFuture(runningJob.future);
+
+    foreach (IAsyncJob *asyncJob, m_running.keys())
+        delete asyncJob;
 }
 
 void Jobs::add(const JobRequest &job)
@@ -87,23 +95,26 @@ JobRequests Jobs::runJobs(const JobRequests &jobsRequests)
 
 bool Jobs::runJob(const JobRequest &jobRequest)
 {
-    if (IAsyncJob *asyncJob = IAsyncJob::create(jobRequest.type)) {
+    IAsyncJob *asyncJob = IAsyncJob::create(jobRequest.type);
+    QTC_ASSERT(asyncJob, return false);
+
     JobContext context(jobRequest, &m_documents, &m_unsavedFiles, &m_client);
     asyncJob->setContext(context);
 
-        if (asyncJob->prepareAsyncRun()) {
-            qCDebug(jobsLog) << "Running" << jobRequest;
+    if (const IAsyncJob::AsyncPrepareResult prepareResult = asyncJob->prepareAsyncRun()) {
+        qCDebug(jobsLog) << "Running" << jobRequest
+                         << "with TranslationUnit" << prepareResult.translationUnitId;
 
         asyncJob->setFinishedHandler([this](IAsyncJob *asyncJob){ onJobFinished(asyncJob); });
         const QFuture<void> future = asyncJob->runAsync();
 
-            m_running.insert(asyncJob, RunningJob{jobRequest, future});
+        const RunningJob runningJob{jobRequest, prepareResult.translationUnitId, future};
+        m_running.insert(asyncJob, runningJob);
         return true;
     } else {
         qCDebug(jobsLog) << "Preparation failed for " << jobRequest;
         delete asyncJob;
     }
-    }
 
     return false;
 }
@@ -112,15 +123,25 @@ void Jobs::onJobFinished(IAsyncJob *asyncJob)
 {
     qCDebug(jobsLog) << "Finishing" << asyncJob->context().jobRequest;
 
+    if (m_jobFinishedCallback) {
+        const RunningJob runningJob = m_running.value(asyncJob);
+        m_jobFinishedCallback(runningJob);
+    }
+
     m_running.remove(asyncJob);
     delete asyncJob;
 
     process();
 }
 
-int Jobs::runningJobs() const
+void Jobs::setJobFinishedCallback(const JobFinishedCallback &jobFinishedCallback)
 {
-    return m_running.size();
+    m_jobFinishedCallback = jobFinishedCallback;
+}
+
+QList<Jobs::RunningJob> Jobs::runningJobs() const
+{
+    return m_running.values();
 }
 
 JobRequests Jobs::queue() const
@@ -128,12 +149,19 @@ JobRequests Jobs::queue() const
     return m_queue.queue();
 }
 
-bool Jobs::isJobRunning(const Utf8String &filePath, const Utf8String &projectPartId) const
+bool Jobs::isJobRunningForTranslationUnit(const Utf8String &translationUnitId) const
 {
-    const auto hasJobRequest = [filePath, projectPartId](const RunningJob &runningJob) {
-        const JobRequest &jobRequest = runningJob.jobRequest;
-        return filePath == jobRequest.filePath
-            && projectPartId == jobRequest.projectPartId;
+    const auto hasTranslationUnitId = [translationUnitId](const RunningJob &runningJob) {
+        return runningJob.translationUnitId == translationUnitId;
+    };
+
+    return Utils::anyOf(m_running.values(), hasTranslationUnitId);
+}
+
+bool Jobs::isJobRunningForJobRequest(const JobRequest &jobRequest) const
+{
+    const auto hasJobRequest = [jobRequest](const RunningJob &runningJob) {
+        return runningJob.jobRequest == jobRequest;
     };
 
     return Utils::anyOf(m_running.values(), hasJobRequest);

src/tools/clangbackend/ipcsource/clangjobs.h

@@ -31,6 +31,8 @@
 
 #include <QFuture>
 
+#include <functional>
+
 namespace ClangBackEnd {
 
 class ClangCodeModelClientInterface;
@@ -43,9 +45,12 @@ class Jobs
 public:
     struct RunningJob {
         JobRequest jobRequest;
+        Utf8String translationUnitId;
         QFuture<void> future;
     };
+
     using RunningJobs = QHash<IAsyncJob *, RunningJob>;
+    using JobFinishedCallback = std::function<void(RunningJob)>;
 
 public:
     Jobs(Documents &documents,
@@ -58,10 +63,13 @@ public:
 
     JobRequests process();
 
+    void setJobFinishedCallback(const JobFinishedCallback &jobFinishedCallback);
+
 public /*for tests*/:
-    int runningJobs() const;
+    QList<RunningJob> runningJobs() const;
     JobRequests queue() const;
-    bool isJobRunning(const Utf8String &filePath, const Utf8String &projectPartId) const;
+    bool isJobRunningForTranslationUnit(const Utf8String &translationUnitId) const;
+    bool isJobRunningForJobRequest(const JobRequest &jobRequest) const;
 
 private:
     JobRequests runJobs(const JobRequests &jobRequest);
@@ -75,6 +83,7 @@ private:
 
     JobQueue m_queue;
     RunningJobs m_running;
+    JobFinishedCallback m_jobFinishedCallback;
 };
 
 } // namespace ClangBackEnd

src/tools/clangbackend/ipcsource/clangparsesupportivetranslationunitjob.cpp

@@ -0,0 +1,78 @@
+/****************************************************************************
+**
+** 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 "clangparsesupportivetranslationunitjob.h"
+
+#include <clangbackendipc/clangbackendipcdebugutils.h>
+
+#include <utils/qtcassert.h>
+
+namespace ClangBackEnd {
+
+static ParseSupportiveTranslationUnitJob::AsyncResult runAsyncHelper(
+        const TranslationUnit &translationUnit,
+        const TranslationUnitUpdateInput &translationUnitUpdateInput)
+{
+    TIME_SCOPE_DURATION("ParseSupportiveTranslationUnitJob");
+
+    TranslationUnitUpdateInput updateInput = translationUnitUpdateInput;
+    updateInput.parseNeeded = true;
+
+    ParseSupportiveTranslationUnitJob::AsyncResult asyncResult;
+    asyncResult.updateResult = translationUnit.update(updateInput);
+
+    return asyncResult;
+}
+
+IAsyncJob::AsyncPrepareResult ParseSupportiveTranslationUnitJob::prepareAsyncRun()
+{
+    const JobRequest jobRequest = context().jobRequest;
+    QTC_ASSERT(jobRequest.type == JobRequest::Type::ParseSupportiveTranslationUnit, return AsyncPrepareResult());
+
+    try {
+        m_pinnedDocument = context().documentForJobRequest();
+        m_pinnedFileContainer = m_pinnedDocument.fileContainer();
+
+        const TranslationUnit translationUnit
+                = m_pinnedDocument.translationUnit(jobRequest.preferredTranslationUnit);
+        const TranslationUnitUpdateInput updateInput = m_pinnedDocument.createUpdateInput();
+        setRunner([translationUnit, updateInput]() {
+            return runAsyncHelper(translationUnit, updateInput);
+        });
+        return AsyncPrepareResult{translationUnit.id()};
+
+    } catch (const std::exception &exception) {
+        qWarning() << "Error in ParseForSupportiveTranslationUnitJob::prepareAsyncRun:"
+                   << exception.what();
+        return AsyncPrepareResult();
+    }
+}
+
+void ParseSupportiveTranslationUnitJob::finalizeAsyncRun()
+{
+}
+
+} // namespace ClangBackEnd
+

src/tools/clangbackend/ipcsource/clangparsesupportivetranslationunitjob.h

@@ -0,0 +1,51 @@
+/****************************************************************************
+**
+** 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.
+**
+****************************************************************************/
+
+#pragma once
+
+#include "clangasyncjob.h"
+#include "clangdocument.h"
+
+namespace ClangBackEnd {
+
+struct ParseSupportiveTranslationUnitJobResult
+{
+    TranslationUnitUpdateResult updateResult;
+};
+
+class ParseSupportiveTranslationUnitJob : public AsyncJob<ParseSupportiveTranslationUnitJobResult>
+{
+public:
+    using AsyncResult = ParseSupportiveTranslationUnitJobResult;
+
+    AsyncPrepareResult prepareAsyncRun() override;
+    void finalizeAsyncRun() override;
+
+private:
+    Document m_pinnedDocument;
+    FileContainer m_pinnedFileContainer;
+};
+
+} // namespace ClangBackEnd

src/tools/clangbackend/ipcsource/clangreparsesupportivetranslationunitjob.cpp

@@ -0,0 +1,82 @@
+/****************************************************************************
+**
+** 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 "clangreparsesupportivetranslationunitjob.h"
+
+#include <clangbackendipc/clangbackendipcdebugutils.h>
+
+#include <utils/qtcassert.h>
+
+namespace ClangBackEnd {
+
+static ReparseSupportiveTranslationUnitJob::AsyncResult runAsyncHelper(
+        const TranslationUnit &translationUnit,
+        const TranslationUnitUpdateInput &translationUnitUpdateInput)
+{
+    TIME_SCOPE_DURATION("ReparseSupportiveTranslationUnitJob");
+
+    TranslationUnitUpdateInput updateInput = translationUnitUpdateInput;
+    updateInput.reparseNeeded = true;
+
+    ReparseSupportiveTranslationUnitJob::AsyncResult asyncResult;
+    asyncResult.updateResult = translationUnit.reparse(updateInput);
+
+    return asyncResult;
+}
+
+IAsyncJob::AsyncPrepareResult ReparseSupportiveTranslationUnitJob::prepareAsyncRun()
+{
+    const JobRequest jobRequest = context().jobRequest;
+    QTC_ASSERT(jobRequest.type == JobRequest::Type::ReparseSupportiveTranslationUnit, return AsyncPrepareResult());
+
+    try {
+        m_pinnedDocument = context().documentForJobRequest();
+        m_pinnedFileContainer = m_pinnedDocument.fileContainer();
+
+        const TranslationUnit translationUnit
+                = m_pinnedDocument.translationUnit(jobRequest.preferredTranslationUnit);
+        const TranslationUnitUpdateInput updateInput = m_pinnedDocument.createUpdateInput();
+        setRunner([translationUnit, updateInput]() {
+            return runAsyncHelper(translationUnit, updateInput);
+        });
+        return AsyncPrepareResult{translationUnit.id()};
+
+    } catch (const std::exception &exception) {
+        qWarning() << "Error in ReparseSupportiveTranslationUnitJob::prepareAsyncRun:"
+                   << exception.what();
+        return AsyncPrepareResult();
+    }
+}
+
+void ReparseSupportiveTranslationUnitJob::finalizeAsyncRun()
+{
+    if (!context().isOutdated()) {
+        const AsyncResult result = asyncResult();
+        m_pinnedDocument.incorporateUpdaterResult(result.updateResult);
+    }
+}
+
+} // namespace ClangBackEnd
+

src/tools/clangbackend/ipcsource/clangreparsesupportivetranslationunitjob.h

@@ -0,0 +1,51 @@
+/****************************************************************************
+**
+** 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.
+**
+****************************************************************************/
+
+#pragma once
+
+#include "clangasyncjob.h"
+#include "clangdocument.h"
+
+namespace ClangBackEnd {
+
+struct ReparseSupportiveTranslationUnitJobResult
+{
+    TranslationUnitUpdateResult updateResult;
+};
+
+class ReparseSupportiveTranslationUnitJob : public AsyncJob<ReparseSupportiveTranslationUnitJobResult>
+{
+public:
+    using AsyncResult = ReparseSupportiveTranslationUnitJobResult;
+
+    AsyncPrepareResult prepareAsyncRun() override;
+    void finalizeAsyncRun() override;
+
+private:
+    Document m_pinnedDocument;
+    FileContainer m_pinnedFileContainer;
+};
+
+} // namespace ClangBackEnd

src/tools/clangbackend/ipcsource/clangrequestdocumentannotationsjob.cpp

@@ -40,33 +40,35 @@ static RequestDocumentAnnotationsJob::AsyncResult runAsyncHelper(
 
     RequestDocumentAnnotationsJob::AsyncResult asyncResult;
 
-    translationUnit.extractDocumentAnnotations(asyncResult.diagnostics,
+    translationUnit.extractDocumentAnnotations(asyncResult.firstHeaderErrorDiagnostic,
+                                               asyncResult.diagnostics,
                                                asyncResult.highlightingMarks,
                                                asyncResult.skippedSourceRanges);
 
     return asyncResult;
 }
 
-bool RequestDocumentAnnotationsJob::prepareAsyncRun()
+IAsyncJob::AsyncPrepareResult RequestDocumentAnnotationsJob::prepareAsyncRun()
 {
     const JobRequest jobRequest = context().jobRequest;
-    QTC_ASSERT(jobRequest.type == JobRequest::Type::RequestDocumentAnnotations, return false);
+    QTC_ASSERT(jobRequest.type == JobRequest::Type::RequestDocumentAnnotations,
+               return AsyncPrepareResult());
 
     try {
         m_pinnedDocument = context().documentForJobRequest();
         m_pinnedFileContainer = m_pinnedDocument.fileContainer();
 
-        const TranslationUnit translationUnit = m_pinnedDocument.translationUnit();
+        const TranslationUnit translationUnit
+                = m_pinnedDocument.translationUnit(jobRequest.preferredTranslationUnit);
         setRunner([translationUnit]() {
             return runAsyncHelper(translationUnit);
         });
+        return AsyncPrepareResult{translationUnit.id()};
 
     } catch (const std::exception &exception) {
         qWarning() << "Error in RequestDocumentAnnotationsJob::prepareAsyncRun:" << exception.what();
-        return false;
+        return AsyncPrepareResult();
     }
-
-    return true;
 }
 
 void RequestDocumentAnnotationsJob::finalizeAsyncRun()
@@ -82,6 +84,7 @@ void RequestDocumentAnnotationsJob::sendAnnotations(
 {
     const DocumentAnnotationsChangedMessage message(m_pinnedFileContainer,
                                                     result.diagnostics,
+                                                    result.firstHeaderErrorDiagnostic,
                                                     result.highlightingMarks,
                                                     result.skippedSourceRanges);
 

src/tools/clangbackend/ipcsource/clangrequestdocumentannotationsjob.h

@@ -36,6 +36,7 @@ namespace ClangBackEnd {
 
 struct RequestDocumentAnnotationsJobResult
 {
+    ClangBackEnd::DiagnosticContainer firstHeaderErrorDiagnostic;
     QVector<ClangBackEnd::DiagnosticContainer> diagnostics;
     QVector<HighlightingMarkContainer> highlightingMarks;
     QVector<SourceRangeContainer> skippedSourceRanges;
@@ -46,7 +47,7 @@ class RequestDocumentAnnotationsJob : public AsyncJob<RequestDocumentAnnotations
 public:
     using AsyncResult = RequestDocumentAnnotationsJobResult;
 
-    bool prepareAsyncRun() override;
+    AsyncPrepareResult prepareAsyncRun() override;
     void finalizeAsyncRun() override;
 
 private:

src/tools/clangbackend/ipcsource/clangsupportivetranslationunitinitializer.cpp

@@ -0,0 +1,141 @@
+/****************************************************************************
+**
+** 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 "clangsupportivetranslationunitinitializer.h"
+
+#include "clangjobs.h"
+#include "clangtranslationunits.h"
+
+#include <utils/qtcassert.h>
+
+namespace ClangBackEnd {
+
+    // TODO: Check translation unit id?
+
+SupportiveTranslationUnitInitializer::SupportiveTranslationUnitInitializer(
+        const Document &document,
+        Jobs &jobs)
+    : m_document(document)
+    , m_jobs(jobs)
+{
+}
+
+void SupportiveTranslationUnitInitializer::setJobRequestCreator(const JobRequestCreator &creator)
+{
+    m_jobRequestCreator = creator;
+}
+
+void SupportiveTranslationUnitInitializer::setIsDocumentClosedChecker(
+        const IsDocumentClosedChecker &isDocumentClosedChecker)
+{
+    m_isDocumentClosedChecker = isDocumentClosedChecker;
+}
+
+SupportiveTranslationUnitInitializer::State SupportiveTranslationUnitInitializer::state() const
+{
+    return m_state;
+}
+
+void SupportiveTranslationUnitInitializer::startInitializing()
+{
+    QTC_CHECK(m_state == State::NotInitialized);
+    if (abortIfDocumentIsClosed())
+        return;
+
+    m_document.translationUnits().createAndAppend();
+
+    m_jobs.setJobFinishedCallback([this](const Jobs::RunningJob &runningJob) {
+        checkIfParseJobFinished(runningJob);
+    });
+    addJob(JobRequest::Type::ParseSupportiveTranslationUnit);
+    m_jobs.process();
+
+    m_state = State::WaitingForParseJob;
+}
+
+void SupportiveTranslationUnitInitializer::checkIfParseJobFinished(const Jobs::RunningJob &job)
+{
+    QTC_CHECK(m_state == State::WaitingForParseJob);
+    if (abortIfDocumentIsClosed())
+        return;
+
+    if (job.jobRequest.type == JobRequest::Type::ParseSupportiveTranslationUnit) {
+        m_jobs.setJobFinishedCallback([this](const Jobs::RunningJob &runningJob) {
+            checkIfReparseJobFinished(runningJob);
+        });
+
+        addJob(JobRequest::Type::ReparseSupportiveTranslationUnit);
+
+        m_state = State::WaitingForReparseJob;
+    }
+}
+
+void SupportiveTranslationUnitInitializer::checkIfReparseJobFinished(const Jobs::RunningJob &job)
+{
+    QTC_CHECK(m_state == State::WaitingForReparseJob);
+    if (abortIfDocumentIsClosed())
+        return;
+
+    if (job.jobRequest.type == JobRequest::Type::ReparseSupportiveTranslationUnit) {
+        if (m_document.translationUnits().areAllTranslationUnitsParsed()) {
+            m_jobs.setJobFinishedCallback(nullptr);
+            m_state = State::Initialized;
+        } else {
+            // The supportive translation unit was reparsed, but the document
+            // revision changed in the meanwhile, so try again.
+            addJob(JobRequest::Type::ReparseSupportiveTranslationUnit);
+        }
+    }
+}
+
+bool SupportiveTranslationUnitInitializer::abortIfDocumentIsClosed()
+{
+    QTC_CHECK(m_isDocumentClosedChecker);
+
+    if (m_isDocumentClosedChecker(m_document.filePath(), m_document.projectPartId())) {
+        m_state = State::Aborted;
+        return true;
+    }
+
+    return false;
+}
+
+void SupportiveTranslationUnitInitializer::addJob(JobRequest::Type jobRequestType)
+{
+    QTC_CHECK(m_jobRequestCreator);
+
+    const JobRequest jobRequest = m_jobRequestCreator(m_document,
+                                                      jobRequestType,
+                                                      PreferredTranslationUnit::LastUninitialized);
+
+    m_jobs.add(jobRequest);
+}
+
+void SupportiveTranslationUnitInitializer::setState(const State &state)
+{
+    m_state = state;
+}
+
+} // namespace ClangBackEnd

src/tools/clangbackend/ipcsource/clangsupportivetranslationunitinitializer.h

@@ -0,0 +1,77 @@
+/****************************************************************************
+**
+** 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 "clangdocument.h"
+#include "clangjobrequest.h"
+#include "clangjobs.h"
+
+#include <functional>
+
+#pragma once
+
+namespace ClangBackEnd {
+
+class SupportiveTranslationUnitInitializer
+{
+public:
+    using IsDocumentClosedChecker = std::function<bool(const Utf8String &, const Utf8String &)>;
+
+    enum class State {
+        NotInitialized,
+        WaitingForParseJob,
+        WaitingForReparseJob,
+        Initialized,
+        Aborted
+    };
+
+public:
+    SupportiveTranslationUnitInitializer(const Document &document, Jobs &jobs);
+
+    void setJobRequestCreator(const JobRequestCreator &creator);
+    void setIsDocumentClosedChecker(const IsDocumentClosedChecker &isDocumentClosedChecker);
+
+    State state() const;
+    void startInitializing();
+
+public: // for tests
+    void setState(const State &state);
+    void checkIfParseJobFinished(const Jobs::RunningJob &job);
+    void checkIfReparseJobFinished(const Jobs::RunningJob &job);
+
+private:
+
+    bool abortIfDocumentIsClosed();
+    void addJob(JobRequest::Type jobRequestType);
+
+private:
+    Document m_document;
+    Jobs &m_jobs;
+
+    State m_state = State::NotInitialized;
+    JobRequestCreator m_jobRequestCreator;
+    IsDocumentClosedChecker m_isDocumentClosedChecker;
+};
+
+} // namespace ClangBackEnd

src/tools/clangbackend/ipcsource/clangtranslationunit.cpp

@@ -38,10 +38,12 @@
 
 namespace ClangBackEnd {
 
-TranslationUnit::TranslationUnit(const Utf8String &filepath,
+TranslationUnit::TranslationUnit(const Utf8String &id,
+                                 const Utf8String &filepath,
                                  CXIndex &cxIndex,
                                  CXTranslationUnit &cxTranslationUnit)
-    : m_filePath(filepath)
+    : m_id(id)
+    , m_filePath(filepath)
     , m_cxIndex(cxIndex)
     , m_cxTranslationUnit(cxTranslationUnit)
 {
@@ -49,7 +51,12 @@ TranslationUnit::TranslationUnit(const Utf8String &filepath,
 
 bool TranslationUnit::isNull() const
 {
-    return !m_cxTranslationUnit || !m_cxIndex || m_filePath.isEmpty();
+    return !m_cxTranslationUnit || !m_cxIndex || m_filePath.isEmpty() || m_id.isEmpty();
+}
+
+Utf8String TranslationUnit::id() const
+{
+    return m_id;
 }
 
 Utf8String TranslationUnit::filePath() const
@@ -70,7 +77,7 @@ CXTranslationUnit &TranslationUnit::cxTranslationUnit() const
 TranslationUnitUpdateResult TranslationUnit::update(
         const TranslationUnitUpdateInput &parseInput) const
 {
-    TranslationUnitUpdater updater(cxIndex(), cxTranslationUnit(), parseInput);
+    TranslationUnitUpdater updater(id(), cxIndex(), cxTranslationUnit(), parseInput);
 
     return updater.update(TranslationUnitUpdater::UpdateMode::AsNeeded);
 }
@@ -78,7 +85,7 @@ TranslationUnitUpdateResult TranslationUnit::update(
 TranslationUnitUpdateResult TranslationUnit::parse(
         const TranslationUnitUpdateInput &parseInput) const
 {
-    TranslationUnitUpdater updater(cxIndex(), cxTranslationUnit(), parseInput);
+    TranslationUnitUpdater updater(id(), cxIndex(), cxTranslationUnit(), parseInput);
 
     return updater.update(TranslationUnitUpdater::UpdateMode::ParseIfNeeded);
 }
@@ -86,7 +93,7 @@ TranslationUnitUpdateResult TranslationUnit::parse(
 TranslationUnitUpdateResult TranslationUnit::reparse(
         const TranslationUnitUpdateInput &parseInput) const
 {
-    TranslationUnitUpdater updater(cxIndex(), cxTranslationUnit(), parseInput);
+    TranslationUnitUpdater updater(id(), cxIndex(), cxTranslationUnit(), parseInput);
 
     return updater.update(TranslationUnitUpdater::UpdateMode::ForceReparse);
 }
@@ -105,11 +112,12 @@ TranslationUnit::CodeCompletionResult TranslationUnit::complete(
 }
 
 void TranslationUnit::extractDocumentAnnotations(
-        QVector<DiagnosticContainer> &diagnostics,
+        DiagnosticContainer &firstHeaderErrorDiagnostic,
+        QVector<DiagnosticContainer> &mainFileDiagnostics,
         QVector<HighlightingMarkContainer> &highlightingMarks,
         QVector<SourceRangeContainer> &skippedSourceRanges) const
 {
-    diagnostics = mainFileDiagnostics();
+    extractDiagnostics(firstHeaderErrorDiagnostic, mainFileDiagnostics);
     highlightingMarks = this->highlightingMarks().toHighlightingMarksContainers();
     skippedSourceRanges = this->skippedSourceRanges().toSourceRangeContainers();
 }
@@ -119,15 +127,6 @@ DiagnosticSet TranslationUnit::diagnostics() const
     return DiagnosticSet(clang_getDiagnosticSetFromTU(m_cxTranslationUnit));
 }
 
-QVector<DiagnosticContainer> TranslationUnit::mainFileDiagnostics() const
-{
-    const auto isMainFileDiagnostic = [this](const Diagnostic &diagnostic) {
-        return diagnostic.location().filePath() == m_filePath;
-    };
-
-    return diagnostics().toDiagnosticContainers(isMainFileDiagnostic);
-}
-
 SourceLocation TranslationUnit::sourceLocationAt(uint line,uint column) const
 {
     return SourceLocation(m_cxTranslationUnit, m_filePath, line, column);
@@ -186,4 +185,35 @@ SkippedSourceRanges TranslationUnit::skippedSourceRanges() const
     return SkippedSourceRanges(m_cxTranslationUnit, m_filePath.constData());
 }
 
+static bool isMainFileDiagnostic(const Utf8String &mainFilePath, const Diagnostic &diagnostic)
+{
+    return diagnostic.location().filePath() == mainFilePath;
+}
+
+static bool isHeaderErrorDiagnostic(const Utf8String &mainFilePath, const Diagnostic &diagnostic)
+{
+    const bool isCritical = diagnostic.severity() == DiagnosticSeverity::Error
+                         || diagnostic.severity() == DiagnosticSeverity::Fatal;
+    return isCritical && diagnostic.location().filePath() != mainFilePath;
+}
+
+void TranslationUnit::extractDiagnostics(DiagnosticContainer &firstHeaderErrorDiagnostic,
+                                         QVector<DiagnosticContainer> &mainFileDiagnostics) const
+{
+    mainFileDiagnostics.clear();
+    mainFileDiagnostics.reserve(int(diagnostics().size()));
+
+    bool hasFirstHeaderErrorDiagnostic = false;
+
+    for (const Diagnostic &diagnostic : diagnostics()) {
+        if (!hasFirstHeaderErrorDiagnostic && isHeaderErrorDiagnostic(m_filePath, diagnostic)) {
+            hasFirstHeaderErrorDiagnostic = true;
+            firstHeaderErrorDiagnostic = diagnostic.toDiagnosticContainer();
+        }
+
+        if (isMainFileDiagnostic(m_filePath, diagnostic))
+            mainFileDiagnostics.push_back(diagnostic.toDiagnosticContainer());
+    }
+}
+
 } // namespace ClangBackEnd

src/tools/clangbackend/ipcsource/clangtranslationunit.h

@@ -57,12 +57,15 @@ public:
     };
 
 public:
-    TranslationUnit(const Utf8String &filePath,
+    TranslationUnit(const Utf8String &id,
+                    const Utf8String &filePath,
                     CXIndex &cxIndex,
                     CXTranslationUnit &cxTranslationUnit);
 
     bool isNull() const;
 
+    Utf8String id() const;
+
     Utf8String filePath() const;
     CXIndex &cxIndex() const;
     CXTranslationUnit &cxTranslationUnit() const;
@@ -73,12 +76,14 @@ public:
 
     CodeCompletionResult complete(UnsavedFiles &unsavedFiles, uint line, uint column) const;
 
-    void extractDocumentAnnotations(QVector<DiagnosticContainer> &diagnostics,
+    void extractDiagnostics(DiagnosticContainer &firstHeaderErrorDiagnostic,
+                            QVector<DiagnosticContainer> &mainFileDiagnostics) const;
+    void extractDocumentAnnotations(DiagnosticContainer &firstHeaderErrorDiagnostic,
+                                    QVector<DiagnosticContainer> &mainFileDiagnostics,
                                     QVector<HighlightingMarkContainer> &highlightingMarks,
                                     QVector<SourceRangeContainer> &skippedSourceRanges) const;
 
     DiagnosticSet diagnostics() const;
-    QVector<DiagnosticContainer> mainFileDiagnostics() const;
 
     SourceLocation sourceLocationAt(uint line, uint column) const;
     SourceLocation sourceLocationAt(const Utf8String &filePath, uint line, uint column) const;
@@ -94,6 +99,7 @@ public:
     SkippedSourceRanges skippedSourceRanges() const;
 
 private:
+    const Utf8String m_id;
     const Utf8String m_filePath;
     CXIndex &m_cxIndex;
     CXTranslationUnit &m_cxTranslationUnit;

src/tools/clangbackend/ipcsource/clangtranslationunits.cpp

@@ -0,0 +1,150 @@
+/****************************************************************************
+**
+** 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 "clangtranslationunits.h"
+
+#include "clangexceptions.h"
+#include "clangtranslationunit.h"
+
+#include <utils/algorithm.h>
+#include <utils/qtcassert.h>
+
+#include <QFileInfo>
+#include <QLoggingCategory>
+#include <QUuid>
+
+#include <algorithm>
+
+Q_LOGGING_CATEGORY(tuLog, "qtc.clangbackend.translationunits");
+
+namespace ClangBackEnd {
+
+TranslationUnits::TranslationUnits(const Utf8String &filePath)
+    : m_filePath(filePath)
+{
+}
+
+TranslationUnits::~TranslationUnits()
+{
+    foreach (const TranslationUnitData &unit, m_tuDatas) {
+        clang_disposeTranslationUnit(unit.cxTranslationUnit);
+        clang_disposeIndex(unit.cxIndex);
+    }
+}
+
+TranslationUnit TranslationUnits::createAndAppend()
+{
+    const Utf8String id = Utf8String::fromByteArray(QUuid::createUuid().toByteArray());
+    qCDebug(tuLog) << "Creating TranslationUnit" << id << "for" << QFileInfo(m_filePath).fileName();
+
+    m_tuDatas.append(TranslationUnitData(id));
+    TranslationUnitData &translationUnitData = m_tuDatas.last();
+
+    return toTranslationUnit(translationUnitData);
+}
+
+TranslationUnit TranslationUnits::get(PreferredTranslationUnit type)
+{
+    if (m_tuDatas.isEmpty())
+        throw TranslationUnitDoesNotExist(m_filePath);
+
+    if (m_tuDatas.size() == 1)
+        return toTranslationUnit(m_tuDatas.first());
+
+    if (areAllTranslationUnitsParsed())
+        return getPreferredTranslationUnit(type);
+    else if (type == PreferredTranslationUnit::LastUninitialized)
+        return toTranslationUnit(m_tuDatas.last());
+
+    return toTranslationUnit(m_tuDatas.first());
+}
+
+void TranslationUnits::updateParseTimePoint(const Utf8String &translationUnitId,
+                                            TimePoint timePoint)
+{
+    TranslationUnitData &unit = findUnit(translationUnitId);
+
+    QTC_CHECK(timePoint != TimePoint());
+    unit.parseTimePoint = timePoint;
+
+    qCDebug(tuLog) << "Updated" << translationUnitId << "for" << QFileInfo(m_filePath).fileName()
+        << "RecentlyParsed:" << get(PreferredTranslationUnit::RecentlyParsed).id()
+        << "PreviouslyParsed:" << get(PreferredTranslationUnit::PreviouslyParsed).id();
+}
+
+TimePoint TranslationUnits::parseTimePoint(const Utf8String &translationUnitId)
+{
+    return findUnit(translationUnitId).parseTimePoint;
+}
+
+bool TranslationUnits::areAllTranslationUnitsParsed() const
+{
+    return Utils::allOf(m_tuDatas, [](const TranslationUnitData &unit) {
+        return unit.parseTimePoint != TimePoint();
+    });
+}
+
+int TranslationUnits::size() const
+{
+    return m_tuDatas.size();
+}
+
+TranslationUnit TranslationUnits::getPreferredTranslationUnit(PreferredTranslationUnit type)
+{
+    using TuData = TranslationUnitData;
+
+    const auto lessThan = [](const TuData &a, const TuData &b) {
+        return a.parseTimePoint < b.parseTimePoint;
+    };
+    auto translationUnitData = type == PreferredTranslationUnit::RecentlyParsed
+            ? std::max_element(m_tuDatas.begin(), m_tuDatas.end(), lessThan)
+            : std::min_element(m_tuDatas.begin(), m_tuDatas.end(), lessThan);
+
+    if (translationUnitData == m_tuDatas.end())
+        throw TranslationUnitDoesNotExist(m_filePath);
+
+    return toTranslationUnit(*translationUnitData);
+}
+
+TranslationUnits::TranslationUnitData &TranslationUnits::findUnit(
+        const Utf8String &translationUnitId)
+{
+    for (TranslationUnitData &unit : m_tuDatas) {
+        if (translationUnitId == unit.id)
+            return unit;
+    }
+
+    throw TranslationUnitDoesNotExist(m_filePath);
+}
+
+TranslationUnit TranslationUnits::toTranslationUnit(TranslationUnits::TranslationUnitData &unit)
+{
+    return TranslationUnit(unit.id,
+                           m_filePath,
+                           unit.cxIndex,
+                           unit.cxTranslationUnit);
+}
+
+} // namespace ClangBackEnd

src/tools/clangbackend/ipcsource/clangtranslationunits.h

@@ -0,0 +1,82 @@
+/****************************************************************************
+**
+** 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.
+**
+****************************************************************************/
+
+#pragma once
+
+#include "clangbackend_global.h"
+#include "clangclock.h"
+
+#include <utf8string.h>
+
+#include <clang-c/Index.h>
+
+#include <QList>
+
+namespace ClangBackEnd {
+
+class TranslationUnit;
+
+class TranslationUnits
+{
+public:
+    class TranslationUnitData {
+    public:
+        TranslationUnitData(const Utf8String &id)
+            : id(id)
+        {}
+
+        Utf8String id;
+
+        CXTranslationUnit cxTranslationUnit = nullptr;
+        CXIndex cxIndex = nullptr;
+
+        TimePoint parseTimePoint;
+    };
+
+public:
+    TranslationUnits(const Utf8String &filePath);
+    ~TranslationUnits();
+
+    TranslationUnit createAndAppend();
+    TranslationUnit get(PreferredTranslationUnit type = PreferredTranslationUnit::RecentlyParsed);
+    void updateParseTimePoint(const Utf8String &translationUnitId, TimePoint timePoint);
+
+    bool areAllTranslationUnitsParsed() const;
+
+public: // for tests
+    int size() const;
+    TimePoint parseTimePoint(const Utf8String &translationUnitId);
+
+private:
+    TranslationUnit getPreferredTranslationUnit(PreferredTranslationUnit type);
+    TranslationUnitData &findUnit(const Utf8String &translationUnitId);
+    TranslationUnit toTranslationUnit(TranslationUnitData &unit);
+
+private:
+    Utf8String m_filePath;
+    QList<TranslationUnitData> m_tuDatas;
+};
+
+} // namespace ClangBackEnd

src/tools/clangbackend/ipcsource/clangtranslationunitupdater.cpp

@@ -40,13 +40,15 @@ static bool isVerboseModeEnabled()
 
 namespace ClangBackEnd {
 
-TranslationUnitUpdater::TranslationUnitUpdater(CXIndex &index,
+TranslationUnitUpdater::TranslationUnitUpdater(const Utf8String translationUnitId,
+                                               CXIndex &index,
                                                CXTranslationUnit &cxTranslationUnit,
                                                const TranslationUnitUpdateInput &updateData)
     : m_cxIndex(index)
     , m_cxTranslationUnit(cxTranslationUnit)
     , m_in(updateData)
 {
+    m_out.translationUnitId = translationUnitId;
 }
 
 TranslationUnitUpdateResult TranslationUnitUpdater::update(UpdateMode mode)
@@ -122,7 +124,7 @@ void TranslationUnitUpdater::createTranslationUnitIfNeeded()
 
         if (parseWasSuccessful()) {
             updateIncludeFilePaths();
-            m_out.parseTimePoint = std::chrono::steady_clock::now();
+            m_out.parseTimePoint = Clock::now();
         } else {
             qWarning() << "Parsing" << m_in.filePath << "failed:"
                        << errorCodeToText(m_parseErrorCode);
@@ -151,7 +153,7 @@ void TranslationUnitUpdater::reparse()
     if (reparseWasSuccessful()) {
         updateIncludeFilePaths();
 
-        m_out.reparseTimePoint = std::chrono::steady_clock::now();
+        m_out.reparseTimePoint = Clock::now();
         m_out.needsToBeReparsedChangeTimePoint = m_in.needsToBeReparsedChangeTimePoint;
     } else {
         qWarning() << "Reparsing" << m_in.filePath << "failed:" << m_reparseErrorCode;

src/tools/clangbackend/ipcsource/clangtranslationunitupdater.h

@@ -25,6 +25,8 @@
 
 #pragma once
 
+#include "clangclock.h"
+
 #include "commandlinearguments.h"
 #include "unsavedfiles.h"
 #include "utf8stringvector.h"
@@ -33,18 +35,14 @@
 
 #include <QSet>
 
-#include <chrono>
-
 namespace ClangBackEnd {
 
-using time_point = std::chrono::steady_clock::time_point;
-
 class TranslationUnitUpdateInput {
 public:
     bool parseNeeded = false;
     bool reparseNeeded = false;
 
-    time_point needsToBeReparsedChangeTimePoint;
+    TimePoint needsToBeReparsedChangeTimePoint;
     Utf8String filePath;
     Utf8StringVector fileArguments;
 
@@ -57,17 +55,18 @@ public:
 class TranslationUnitUpdateResult {
 public:
     bool hasParsed() const
-    { return parseTimePoint != time_point(); }
+    { return parseTimePoint != TimePoint(); }
 
     bool hasReparsed() const
-    { return reparseTimePoint != time_point(); }
+    { return reparseTimePoint != TimePoint(); }
 
 public:
-    bool hasParseOrReparseFailed = false;
+    Utf8String translationUnitId;
 
-    time_point parseTimePoint;
-    time_point reparseTimePoint;
-    time_point needsToBeReparsedChangeTimePoint;
+    bool hasParseOrReparseFailed = false;
+    TimePoint parseTimePoint;
+    TimePoint reparseTimePoint;
+    TimePoint needsToBeReparsedChangeTimePoint;
 
     QSet<Utf8String> dependedOnFilePaths;
 };
@@ -81,7 +80,8 @@ public:
     };
 
 public:
-    TranslationUnitUpdater(CXIndex &index,
+    TranslationUnitUpdater(const Utf8String translationUnitId,
+                           CXIndex &index,
                            CXTranslationUnit &cxTranslationUnit,
                            const TranslationUnitUpdateInput &in);
 

src/tools/clangbackend/ipcsource/clangtype.cpp

@@ -69,7 +69,7 @@ bool Type::isReferencingConstant() const
     return (isPointer() || isLValueReference()) && pointeeType().isConstant();
 }
 
-bool Type::isOutputParameter() const
+bool Type::isOutputArgument() const
 {
     return (isPointer() || isLValueReference()) && !pointeeType().isConstant();
 }

src/tools/clangbackend/ipcsource/clangtype.h

@@ -49,7 +49,7 @@ public:
     bool isConstantPointer() const;
     bool isLValueReference() const;
     bool isReferencingConstant() const;
-    bool isOutputParameter() const;
+    bool isOutputArgument() const;
 
     Utf8String utf8Spelling() const;
     ClangString spelling() const;

src/tools/clangbackend/ipcsource/clangupdatedocumentannotationsjob.cpp

@@ -45,34 +45,36 @@ static UpdateDocumentAnnotationsJob::AsyncResult runAsyncHelper(
     asyncResult.updateResult = translationUnit.update(translationUnitUpdatInput);
 
     // Collect
-    translationUnit.extractDocumentAnnotations(asyncResult.diagnostics,
+    translationUnit.extractDocumentAnnotations(asyncResult.firstHeaderErrorDiagnostic,
+                                               asyncResult.diagnostics,
                                                asyncResult.highlightingMarks,
                                                asyncResult.skippedSourceRanges);
 
     return asyncResult;
 }
 
-bool UpdateDocumentAnnotationsJob::prepareAsyncRun()
+IAsyncJob::AsyncPrepareResult UpdateDocumentAnnotationsJob::prepareAsyncRun()
 {
     const JobRequest jobRequest = context().jobRequest;
-    QTC_ASSERT(jobRequest.type == JobRequest::Type::UpdateDocumentAnnotations, return false);
+    QTC_ASSERT(jobRequest.type == JobRequest::Type::UpdateDocumentAnnotations,
+               return AsyncPrepareResult());
 
     try {
         m_pinnedDocument = context().documentForJobRequest();
         m_pinnedFileContainer = m_pinnedDocument.fileContainer();
 
-        const TranslationUnit translationUnit = m_pinnedDocument.translationUnit();
+        const TranslationUnit translationUnit
+                = m_pinnedDocument.translationUnit(jobRequest.preferredTranslationUnit);
         const TranslationUnitUpdateInput updateInput = m_pinnedDocument.createUpdateInput();
         setRunner([translationUnit, updateInput]() {
             return runAsyncHelper(translationUnit, updateInput);
         });
+        return AsyncPrepareResult{translationUnit.id()};
 
     } catch (const std::exception &exception) {
         qWarning() << "Error in UpdateDocumentAnnotationsJob::prepareAsyncRun:" << exception.what();
-        return false;
+        return AsyncPrepareResult();
     }
-
-    return true;
 }
 
 void UpdateDocumentAnnotationsJob::finalizeAsyncRun()
@@ -94,6 +96,7 @@ void UpdateDocumentAnnotationsJob::sendAnnotations(const AsyncResult &result)
 {
     const DocumentAnnotationsChangedMessage message(m_pinnedFileContainer,
                                                     result.diagnostics,
+                                                    result.firstHeaderErrorDiagnostic,
                                                     result.highlightingMarks,
                                                     result.skippedSourceRanges);
 

src/tools/clangbackend/ipcsource/clangupdatedocumentannotationsjob.h

@@ -39,6 +39,7 @@ struct UpdateDocumentAnnotationsJobResult
 {
     TranslationUnitUpdateResult updateResult;
 
+    ClangBackEnd::DiagnosticContainer firstHeaderErrorDiagnostic;
     QVector<ClangBackEnd::DiagnosticContainer> diagnostics;
     QVector<HighlightingMarkContainer> highlightingMarks;
     QVector<SourceRangeContainer> skippedSourceRanges;
@@ -49,7 +50,7 @@ class UpdateDocumentAnnotationsJob : public AsyncJob<UpdateDocumentAnnotationsJo
 public:
     using AsyncResult = UpdateDocumentAnnotationsJobResult;
 
-    bool prepareAsyncRun() override;
+    AsyncPrepareResult prepareAsyncRun() override;
     void finalizeAsyncRun() override;
 
 private:

src/tools/clangbackend/ipcsource/cursor.cpp

@@ -213,16 +213,32 @@ SourceLocation Cursor::sourceLocation() const
     return clang_getCursorLocation(cxCursor);
 }
 
+CXSourceLocation Cursor::cxSourceLocation() const
+{
+    return clang_getCursorLocation(cxCursor);
+}
+
 SourceRange Cursor::sourceRange() const
 {
     return clang_getCursorExtent(cxCursor);
 }
 
+CXSourceRange Cursor::cxSourceRange() const
+{
+    return clang_getCursorExtent(cxCursor);
+}
+
 SourceRange Cursor::commentRange() const
 {
     return clang_Cursor_getCommentRange(cxCursor);
 }
 
+bool Cursor::hasSameSourceLocationAs(const Cursor &other) const
+{
+    return clang_equalLocations(clang_getCursorLocation(cxCursor),
+                                clang_getCursorLocation(other.cxCursor));
+}
+
 Cursor Cursor::definition() const
 {
     return clang_getCursorDefinition(cxCursor);
@@ -279,32 +295,42 @@ Cursor Cursor::argument(int index) const
 {
     return clang_Cursor_getArgument(cxCursor, index);
 }
+
 namespace {
-void collectOutputArguments(const Cursor &callExpression,
-                            std::vector<Cursor> &outputArguments)
+
+bool isNotUnexposedLValueReference(const Cursor &argument, const Type &argumentType)
 {
-    auto callExpressionType = callExpression.referenced().type();
-    auto argumentCount = callExpression.argumentCount();
-    outputArguments.reserve(argumentCount);
+    return !(argument.isUnexposed() && argumentType.isLValueReference());
+}
+
+}
+
+void Cursor::collectOutputArgumentRangesTo(std::vector<CXSourceRange> &outputArgumentRanges) const
+{
+    const Type callExpressionType = referenced().type();
+    const int argumentCount = this->argumentCount();
+    const std::size_t maxSize = std::size_t(std::max(0, argumentCount))
+            + outputArgumentRanges.size();
+    outputArgumentRanges.reserve(maxSize);
 
     for (int argumentIndex = 0; argumentIndex < argumentCount; ++argumentIndex) {
-        auto argument = callExpression.argument(argumentIndex);
-        auto argumentType = callExpressionType.argument(argumentIndex);
+        const Cursor argument = this->argument(argumentIndex);
+        const Type argumentType = callExpressionType.argument(argumentIndex);
 
-        if (!argument.isUnexposed() && argumentType.isOutputParameter())
-            outputArguments.push_back(callExpression.argument(argumentIndex));
+        if (isNotUnexposedLValueReference(argument, argumentType)
+                && argumentType.isOutputArgument()) {
+            outputArgumentRanges.push_back(argument.cxSourceRange());
         }
     }
 }
 
-std::vector<Cursor> Cursor::outputArguments() const
+std::vector<CXSourceRange> Cursor::outputArgumentRanges() const
 {
-    std::vector<Cursor> outputArguments;
+    std::vector<CXSourceRange> outputArgumentRanges;
 
-    if (kind() == CXCursor_CallExpr)
-        collectOutputArguments(*this, outputArguments);
+    collectOutputArgumentRangesTo(outputArgumentRanges);
 
-    return outputArguments;
+    return outputArgumentRanges;
 }
 
 CXCursorKind Cursor::kind() const
@@ -317,6 +343,11 @@ bool operator==(const Cursor &first, const Cursor &second)
     return clang_equalCursors(first.cxCursor, second.cxCursor);
 }
 
+bool operator!=(const Cursor &first, const Cursor &second)
+{
+    return !(first == second);
+}
+
 void PrintTo(CXCursorKind cursorKind, ::std::ostream *os)
 {
     ClangString cursorKindSpelling(clang_getCursorKindSpelling(cursorKind));

src/tools/clangbackend/ipcsource/cursor.h

@@ -78,8 +78,11 @@ public:
     Type nonPointerTupe() const;
 
     SourceLocation sourceLocation() const;
+    CXSourceLocation cxSourceLocation() const;
     SourceRange sourceRange() const;
+    CXSourceRange cxSourceRange() const;
     SourceRange commentRange() const;
+    bool hasSameSourceLocationAs(const Cursor &other) const;
 
     Cursor definition() const;
     Cursor canonical() const;
@@ -90,7 +93,9 @@ public:
     Cursor functionBaseDeclaration() const;
     Cursor functionBase() const;
     Cursor argument(int index) const;
-    std::vector<Cursor> outputArguments() const;
+    void collectOutputArgumentRangesTo(
+            std::vector<CXSourceRange> &outputArgumentRanges) const;
+    std::vector<CXSourceRange> outputArgumentRanges() const;
 
     CXCursorKind kind() const;
 
@@ -114,6 +119,7 @@ void Cursor::visit(VisitorCallback visitorCallback) const
 }
 
 bool operator==(const Cursor &first, const Cursor &second);
+bool operator!=(const Cursor &first, const Cursor &second);
 
 void PrintTo(CXCursorKind cursorKind, ::std::ostream *os);
 void PrintTo(const Cursor &cursor, ::std::ostream* os);

src/tools/clangbackend/ipcsource/highlightingmark.cpp

@@ -30,6 +30,7 @@
 #include "highlightingmark.h"
 #include "sourcelocation.h"
 #include "sourcerange.h"
+#include "sourcerangecontainer.h"
 
 #include <cstring>
 #include <ostream>
@@ -40,15 +41,18 @@ namespace ClangBackEnd {
 
 HighlightingMark::HighlightingMark(const CXCursor &cxCursor,
                                    CXToken *cxToken,
-                                                 CXTranslationUnit cxTranslationUnit)
+                                   CXTranslationUnit cxTranslationUnit,
+                                   std::vector<CXSourceRange> &currentOutputArgumentRanges)
+    : currentOutputArgumentRanges(&currentOutputArgumentRanges),
+      originalCursor(cxCursor)
 {
     const SourceRange sourceRange = clang_getTokenExtent(cxTranslationUnit, *cxToken);
     const auto start = sourceRange.start();
     const auto end = sourceRange.end();
 
-    originalCursor = cxCursor;
     line = start.line();
     column = start.column();
+    offset = start.offset();
     length = end.offset() - start.offset();
     collectKinds(cxToken, originalCursor);
 }
@@ -159,6 +163,17 @@ void HighlightingMark::variableKind(const Cursor &cursor)
         types.mainHighlightingType = HighlightingType::LocalVariable;
     else
         types.mainHighlightingType = HighlightingType::GlobalVariable;
+
+    if (isOutputArgument())
+        types.mixinHighlightingTypes.push_back(HighlightingType::OutputArgument);
+}
+
+void HighlightingMark::fieldKind(const Cursor &)
+{
+    types.mainHighlightingType = HighlightingType::Field;
+
+    if (isOutputArgument())
+        types.mixinHighlightingTypes.push_back(HighlightingType::OutputArgument);
 }
 
 bool HighlightingMark::isVirtualMethodDeclarationOrDefinition(const Cursor &cursor) const
@@ -185,6 +200,68 @@ void HighlightingMark::addExtraTypeIfFirstPass(HighlightingType type,
         types.mixinHighlightingTypes.push_back(type);
 }
 
+bool HighlightingMark::isArgumentInCurrentOutputArgumentLocations() const
+{
+    auto originalSourceLocation = originalCursor.cxSourceLocation();
+
+    const auto isNotSameOutputArgument = [&] (const CXSourceRange &currentSourceRange) {
+        return !(originalSourceLocation.int_data >= currentSourceRange.begin_int_data
+                 && originalSourceLocation.int_data <= currentSourceRange.end_int_data);
+    };
+
+    auto partitionPoint = std::partition(currentOutputArgumentRanges->begin(),
+                                         currentOutputArgumentRanges->end(),
+                                         isNotSameOutputArgument);
+
+    bool isOutputArgument = partitionPoint != currentOutputArgumentRanges->end();
+
+    if (isOutputArgument)
+        currentOutputArgumentRanges->erase(partitionPoint, currentOutputArgumentRanges->end());
+
+    return isOutputArgument;
+}
+
+bool HighlightingMark::isOutputArgument() const
+{
+    if (currentOutputArgumentRanges->empty())
+        return false;
+
+    return isArgumentInCurrentOutputArgumentLocations();
+}
+
+void HighlightingMark::collectOutputArguments(const Cursor &cursor)
+{
+    cursor.collectOutputArgumentRangesTo(*currentOutputArgumentRanges);
+    filterOutPreviousOutputArguments();
+}
+
+namespace {
+
+uint getStart(CXSourceRange cxSourceRange)
+{
+    CXSourceLocation startSourceLocation = clang_getRangeStart(cxSourceRange);
+
+    uint startOffset;
+
+    clang_getFileLocation(startSourceLocation, nullptr, nullptr, nullptr, &startOffset);
+
+    return startOffset;
+}
+}
+
+void HighlightingMark::filterOutPreviousOutputArguments()
+{
+    auto isAfterLocation = [this] (CXSourceRange outputRange) {
+        return getStart(outputRange) > offset;
+    };
+
+    auto precedingBegin = std::partition(currentOutputArgumentRanges->begin(),
+                                         currentOutputArgumentRanges->end(),
+                                         isAfterLocation);
+
+    currentOutputArgumentRanges->erase(precedingBegin, currentOutputArgumentRanges->end());
+}
+
 void HighlightingMark::functionKind(const Cursor &cursor, Recursion recursion)
 {
     if (isRealDynamicCall(cursor) || isVirtualMethodDeclarationOrDefinition(cursor))
@@ -204,12 +281,13 @@ void HighlightingMark::identifierKind(const Cursor &cursor, Recursion recursion)
         case CXCursor_CallExpr:
         case CXCursor_CXXMethod:                 functionKind(cursor, recursion); break;
         case CXCursor_NonTypeTemplateParameter:
-        case CXCursor_ParmDecl:                  types.mainHighlightingType = HighlightingType::LocalVariable; break;
+        case CXCursor_CompoundStmt:              types.mainHighlightingType = HighlightingType::LocalVariable; break;
+        case CXCursor_ParmDecl:
         case CXCursor_VarDecl:                   variableKind(cursor); break;
         case CXCursor_DeclRefExpr:               identifierKind(cursor.referenced(), Recursion::RecursivePass); break;
         case CXCursor_MemberRefExpr:             memberReferenceKind(cursor); break;
         case CXCursor_FieldDecl:
-        case CXCursor_MemberRef:
+        case CXCursor_MemberRef:                 fieldKind(cursor); break;
         case CXCursor_ObjCIvarDecl:
         case CXCursor_ObjCPropertyDecl:
         case CXCursor_ObjCClassMethodDecl:
@@ -282,15 +360,17 @@ HighlightingType operatorKind(const Cursor &cursor)
         return HighlightingType::Invalid;
 }
 
-HighlightingType punctationKind(const Cursor &cursor)
+}
+
+HighlightingType HighlightingMark::punctuationKind(const Cursor &cursor)
 {
     switch (cursor.kind()) {
         case CXCursor_DeclRefExpr: return operatorKind(cursor);
+        case CXCursor_CallExpr:    collectOutputArguments(cursor);
         default:                   return HighlightingType::Invalid;
     }
 }
 
-}
 void HighlightingMark::collectKinds(CXToken *cxToken, const Cursor &cursor)
 {
     auto cxTokenKind = clang_getTokenKind(*cxToken);
@@ -299,7 +379,7 @@ void HighlightingMark::collectKinds(CXToken *cxToken, const Cursor &cursor)
 
     switch (cxTokenKind) {
         case CXToken_Keyword:     types.mainHighlightingType = HighlightingType::Keyword; break;
-        case CXToken_Punctuation: types.mainHighlightingType = punctationKind(cursor); break;
+        case CXToken_Punctuation: types.mainHighlightingType = punctuationKind(cursor); break;
         case CXToken_Identifier:  identifierKind(cursor, Recursion::FirstPass); break;
         case CXToken_Comment:     types.mainHighlightingType = HighlightingType::Comment; break;
         case CXToken_Literal:     types.mainHighlightingType = literalKind(cursor); break;

src/tools/clangbackend/ipcsource/highlightingmark.h

@@ -45,7 +45,10 @@ class HighlightingMark
     };
 
 public:
-    HighlightingMark(const CXCursor &cxCursor, CXToken *cxToken, CXTranslationUnit cxTranslationUnit);
+    HighlightingMark(const CXCursor &cxCursor,
+                     CXToken *cxToken,
+                     CXTranslationUnit cxTranslationUnit,
+                     std::vector<CXSourceRange> &currentOutputArgumentRanges);
     HighlightingMark(uint line, uint column, uint length, HighlightingTypes types);
     HighlightingMark(uint line, uint column, uint length, HighlightingType type);
 
@@ -61,18 +64,26 @@ private:
     void identifierKind(const Cursor &cursor, Recursion recursion);
     void referencedTypeKind(const Cursor &cursor);
     void variableKind(const Cursor &cursor);
+    void fieldKind(const Cursor &cursor);
     bool isVirtualMethodDeclarationOrDefinition(const Cursor &cursor) const;
     void functionKind(const Cursor &cursor, Recursion recursion);
     void memberReferenceKind(const Cursor &cursor);
+    HighlightingType punctuationKind(const Cursor &cursor);
     void collectKinds(CXToken *cxToken, const Cursor &cursor);
     bool isRealDynamicCall(const Cursor &cursor) const;
     void addExtraTypeIfFirstPass(HighlightingType type, Recursion recursion);
+    bool isOutputArgument() const;
+    void collectOutputArguments(const Cursor &cursor);
+    void filterOutPreviousOutputArguments();
+    bool isArgumentInCurrentOutputArgumentLocations() const;
 
 private:
+    std::vector<CXSourceRange> *currentOutputArgumentRanges = nullptr;
     Cursor originalCursor;
     uint line;
     uint column;
     uint length;
+    uint offset = 0;
     HighlightingTypes types;
 };
 

src/tools/clangbackend/ipcsource/highlightingmarks.cpp

@@ -47,12 +47,18 @@ HighlightingMarks::~HighlightingMarks()
 
 HighlightingMarks::const_iterator HighlightingMarks::begin() const
 {
-    return const_iterator(cxCursor.cbegin(), cxToken, cxTranslationUnit);
+    return const_iterator(cxCursor.cbegin(),
+                          cxToken,
+                          cxTranslationUnit,
+                          currentOutputArgumentRanges);
 }
 
 HighlightingMarks::const_iterator HighlightingMarks::end() const
 {
-    return const_iterator(cxCursor.cend(), cxToken + cxTokenCount, cxTranslationUnit);
+    return const_iterator(cxCursor.cend(),
+                          cxToken + cxTokenCount,
+                          cxTranslationUnit,
+                          currentOutputArgumentRanges);
 }
 
 QVector<HighlightingMarkContainer> HighlightingMarks::toHighlightingMarksContainers() const
@@ -67,11 +73,19 @@ QVector<HighlightingMarkContainer> HighlightingMarks::toHighlightingMarksContain
              && !highlightMark.hasMainType(HighlightingType::Comment);
     };
 
-    std::copy_if(begin(), end(), std::back_inserter(containers), isValidHighlightMark);
+    for (const HighlightingMark &highlightMark : *this) {
+        if (isValidHighlightMark(highlightMark))
+            containers.push_back(highlightMark);
+    }
 
     return containers;
 }
 
+bool HighlightingMarks::currentOutputArgumentRangesAreEmpty() const
+{
+    return currentOutputArgumentRanges.empty();
+}
+
 bool HighlightingMarks::isEmpty() const
 {
     return cxTokenCount == 0;
@@ -89,7 +103,10 @@ uint HighlightingMarks::size() const
 
 HighlightingMark HighlightingMarks::operator[](size_t index) const
 {
-    return HighlightingMark(cxCursor[index], cxToken + index, cxTranslationUnit);
+    return HighlightingMark(cxCursor[index],
+                            cxToken + index,
+                            cxTranslationUnit,
+                            currentOutputArgumentRanges);
 }
 
 } // namespace ClangBackEnd