C++ editor: Remove scanning/caching of includes

With the completion now in a separate thread this should
no longer be necessary.

Reviewed-by: Roberto Raggi

6 files changed, 24 insertions, 173 deletions

diff --git a/src/libs/cplusplus/ModelManagerInterface.h b/src/libs/cplusplus/ModelManagerInterface.h
index 5ac26b8e47..f3b7784e57 100644
--- a/src/libs/cplusplus/ModelManagerInterface.h
+++ b/src/libs/cplusplus/ModelManagerInterface.h
@@ -132,8 +132,6 @@ public:
     virtual ProjectInfo projectInfo(ProjectExplorer::Project *project) const = 0;
     virtual void updateProjectInfo(const ProjectInfo &pinfo) = 0;
 
-    virtual QStringList includesInPath(const QString &path) const = 0;
-
     virtual void addEditorSupport(CppTools::AbstractEditorSupport *editorSupport) = 0;
     virtual void removeEditorSupport(CppTools::AbstractEditorSupport *editorSupport) = 0;
 
diff --git a/src/plugins/cpptools/cppcompletionassist.cpp b/src/plugins/cpptools/cppcompletionassist.cpp
index d6e89dc3dc..b4c6da6c1f 100644
--- a/src/plugins/cpptools/cppcompletionassist.cpp
+++ b/src/plugins/cpptools/cppcompletionassist.cpp
@@ -1156,20 +1156,22 @@ bool CppCompletionAssistProcessor::completeInclude(const QTextCursor &cursor)
     }
 
     // Make completion for all relevant includes
-    CppModelManagerInterface *manager = CppModelManagerInterface::instance();
     QStringList includePaths = m_interface->includePaths();
     const QString &currentFilePath = QFileInfo(m_interface->file()->fileName()).path();
     if (!includePaths.contains(currentFilePath))
         includePaths.append(currentFilePath);
 
+    const Core::MimeType mimeType =
+            Core::ICore::instance()->mimeDatabase()->findByType(QLatin1String("text/x-c++hdr"));
+    const QStringList suffixes = mimeType.suffixes();
+
     foreach (const QString &includePath, includePaths) {
         QString realPath = includePath;
         if (!directoryPrefix.isEmpty()) {
             realPath += QLatin1Char('/');
             realPath += directoryPrefix;
         }
-        foreach (const QString &itemText, manager->includesInPath(realPath))
-            addCompletionItem(itemText, m_icons.keywordIcon());
+        completeInclude(realPath, suffixes);
     }
 
     foreach (const QString &frameworkPath, m_interface->frameworkPaths()) {
@@ -1179,13 +1181,29 @@ bool CppCompletionAssistProcessor::completeInclude(const QTextCursor &cursor)
             realPath += directoryPrefix;
             realPath += QLatin1String(".framework/Headers");
         }
-        foreach (const QString &itemText, manager->includesInPath(realPath))
-            addCompletionItem(itemText, m_icons.keywordIcon());
+        completeInclude(realPath, suffixes);
     }
 
     return !m_completions.isEmpty();
 }
 
+void CppCompletionAssistProcessor::completeInclude(const QString &realPath,
+                                                   const QStringList &suffixes)
+{
+    QDirIterator i(realPath, QDir::Files | QDir::Dirs | QDir::NoDotAndDotDot);
+    while (i.hasNext()) {
+        const QString fileName = i.next();
+        const QFileInfo fileInfo = i.fileInfo();
+        const QString suffix = fileInfo.suffix();
+        if (suffix.isEmpty() || suffixes.contains(suffix)) {
+            QString text = fileName.mid(realPath.length() + 1);
+            if (fileInfo.isDir())
+                text += QLatin1Char('/');
+            addCompletionItem(text, m_icons.keywordIcon());
+        }
+    }
+}
+
 void CppCompletionAssistProcessor::completePreprocessor()
 {
     foreach (const QString &preprocessorCompletion, preprocessorCompletions)
diff --git a/src/plugins/cpptools/cppcompletionassist.h b/src/plugins/cpptools/cppcompletionassist.h
index 8ed0282736..080b5c3c84 100644
--- a/src/plugins/cpptools/cppcompletionassist.h
+++ b/src/plugins/cpptools/cppcompletionassist.h
@@ -97,6 +97,7 @@ private:
 
     void completeObjCMsgSend(CPlusPlus::ClassOrNamespace *binding, bool staticClassAccess);
     bool completeInclude(const QTextCursor &cursor);
+    void completeInclude(const QString &realPath, const QStringList &suffixes);
     void completePreprocessor();
     bool completeConstructorOrFunction(const QList<CPlusPlus::LookupItem> &results,
                                        int endOfExpression,
diff --git a/src/plugins/cpptools/cppmodelmanager.cpp b/src/plugins/cpptools/cppmodelmanager.cpp
index 21c85b5326..aaa954ce39 100644
--- a/src/plugins/cpptools/cppmodelmanager.cpp
+++ b/src/plugins/cpptools/cppmodelmanager.cpp
@@ -777,16 +777,6 @@ QByteArray CppModelManager::internalDefinedMacros() const
     return macros;
 }
 
-void CppModelManager::setIncludesInPaths(const QMap<QString, QStringList> &includesInPaths)
-{
-    QMutexLocker locker(&mutex);
-    QMapIterator<QString, QStringList> i(includesInPaths);
-    while (i.hasNext()) {
-        i.next();
-        m_includesInPaths.insert(i.key(), i.value());
-    }
-}
-
 void CppModelManager::addEditorSupport(AbstractEditorSupport *editorSupport)
 {
     m_addtionalEditorSupport.insert(editorSupport);
@@ -877,25 +867,6 @@ void CppModelManager::updateProjectInfo(const ProjectInfo &pinfo)
 
     m_projects.insert(pinfo.project, pinfo);
     m_dirty = true;
-
-    if (m_indexerEnabled) {
-        QFuture<void> result = QtConcurrent::run(&CppModelManager::updateIncludesInPaths,
-                                                 this,
-                                                 pinfo.includePaths,
-                                                 pinfo.frameworkPaths,
-                                                 m_headerSuffixes);
-
-        if (pinfo.includePaths.size() > 1) {
-            m_core->progressManager()->addTask(result, tr("Scanning"),
-                                               CppTools::Constants::TASK_INDEX);
-        }
-    }
-}
-
-QStringList CppModelManager::includesInPath(const QString &path) const
-{
-    QMutexLocker locker(&mutex);
-    return m_includesInPaths.value(path);
 }
 
 QFuture<void> CppModelManager::refreshSourceFiles(const QStringList &sourceFiles)
@@ -1196,122 +1167,6 @@ void CppModelManager::onAboutToUnloadSession()
     GC();
 }
 
-void CppModelManager::updateIncludesInPaths(QFutureInterface<void> &future,
-                                            CppModelManager *manager,
-                                            QStringList paths,
-                                            QStringList frameworkPaths,
-                                            QStringList suffixes)
-{
-    QMap<QString, QStringList> entriesInPaths;
-    typedef QPair<QString, QString> SymLink;
-    typedef QList<SymLink> SymLinks;
-    SymLinks symlinks;
-    int processed = 0;
-
-    future.setProgressRange(0, paths.size());
-
-    static const int MAX_DEPTH = 3;
-    QList<int> pathDepths;
-    pathDepths.reserve(paths.size());
-    for (int i = 0; i < paths.size(); ++i) {
-        pathDepths.append(0);
-    }
-
-    // Add framework header directories to path list
-    QStringList frameworkFilter;
-    frameworkFilter << QLatin1String("*.framework");
-    QStringListIterator fwPathIt(frameworkPaths);
-    while (fwPathIt.hasNext()) {
-        const QString &fwPath = fwPathIt.next();
-        QStringList entriesInFrameworkPath;
-        const QStringList &frameworks = QDir(fwPath).entryList(frameworkFilter, QDir::Dirs | QDir::NoDotAndDotDot);
-        QStringListIterator fwIt(frameworks);
-        while (fwIt.hasNext()) {
-            QString framework = fwIt.next();
-            paths.append(fwPath + QLatin1Char('/') + framework + QLatin1String("/Headers"));
-            pathDepths.append(0);
-            framework.chop(10); // remove the ".framework"
-            entriesInFrameworkPath.append(framework + QLatin1Char('/'));
-        }
-        entriesInPaths.insert(fwPath, entriesInFrameworkPath);
-    }
-
-    while (!paths.isEmpty()) {
-        if (future.isPaused())
-            future.waitForResume();
-
-        if (future.isCanceled())
-            return;
-
-        const QString path = paths.takeFirst();
-        const int depth = pathDepths.takeFirst();
-
-        // Skip non-existing paths
-        if (!QFile::exists(path))
-            continue;
-
-        // Skip already scanned paths
-        if (entriesInPaths.contains(path))
-            continue;
-
-        QStringList entries;
-
-        QDirIterator i(path, QDir::Files | QDir::Dirs | QDir::NoDotAndDotDot);
-        while (i.hasNext()) {
-            const QString fileName = i.next();
-            const QFileInfo fileInfo = i.fileInfo();
-            QString text = fileInfo.fileName();
-            if (depth < MAX_DEPTH && fileInfo.isDir()) {
-                text += QLatin1Char('/');
-
-                // Also scan subdirectory, but avoid endless recursion with symbolic links
-                if (fileInfo.isSymLink()) {
-                    QString target = fileInfo.symLinkTarget();
-
-                    // Don't add broken symlinks
-                    if (!QFileInfo(target).exists())
-                        continue;
-
-                    QMap<QString, QStringList>::const_iterator result = entriesInPaths.find(target);
-                    if (result != entriesInPaths.constEnd()) {
-                        entriesInPaths.insert(fileName, result.value());
-                    } else {
-                        paths.append(target);
-                        pathDepths.append(depth + 1);
-                        symlinks.append(SymLink(fileName, target));
-                    }
-                } else {
-                    paths.append(fileName);
-                    pathDepths.append(depth + 1);
-                }
-                entries.append(text);
-            } else {
-                const QString suffix = fileInfo.suffix();
-                if (suffix.isEmpty() || suffixes.contains(suffix))
-                    entries.append(text);
-            }
-        }
-
-        entriesInPaths.insert(path, entries);
-
-        ++processed;
-        future.setProgressRange(0, processed + paths.size());
-        future.setProgressValue(processed);
-    }
-    // link symlinks
-    QListIterator<SymLink> it(symlinks);
-    it.toBack();
-    while (it.hasPrevious()) {
-        SymLink v = it.previous();
-        QMap<QString, QStringList>::const_iterator result = entriesInPaths.find(v.second);
-        entriesInPaths.insert(v.first, result.value());
-    }
-
-    manager->setIncludesInPaths(entriesInPaths);
-
-    future.reportFinished();
-}
-
 void CppModelManager::parse(QFutureInterface<void> &future,
                             CppPreprocessor *preproc,
                             QStringList files)
diff --git a/src/plugins/cpptools/cppmodelmanager.h b/src/plugins/cpptools/cppmodelmanager.h
index fe01c8b441..d9823984f1 100644
--- a/src/plugins/cpptools/cppmodelmanager.h
+++ b/src/plugins/cpptools/cppmodelmanager.h
@@ -100,8 +100,6 @@ public:
     virtual ProjectInfo projectInfo(ProjectExplorer::Project *project) const;
     virtual void updateProjectInfo(const ProjectInfo &pinfo);
 
-    virtual QStringList includesInPath(const QString &path) const;
-
     virtual CPlusPlus::Snapshot snapshot() const;
     virtual void GC();
 
@@ -132,9 +130,6 @@ public:
 
     virtual QList<LanguageUtils::FakeMetaObject::ConstPtr> exportedQmlObjects(const CPlusPlus::Document::Ptr &doc) const;
 
-    void setHeaderSuffixes(const QStringList &suffixes)
-    { m_headerSuffixes = suffixes; }
-
 Q_SIGNALS:
     void projectPathChanged(const QString &projectPath);
 
@@ -187,14 +182,6 @@ private:
     QStringList internalFrameworkPaths() const;
     QByteArray internalDefinedMacros() const;
 
-    void setIncludesInPaths(const QMap<QString, QStringList> &includesInPaths);
-
-    static void updateIncludesInPaths(QFutureInterface<void> &future,
-                                      CppModelManager *manager,
-                                      QStringList paths,
-                                      QStringList frameworkPaths,
-                                      QStringList suffixes);
-
     static void parse(QFutureInterface<void> &future,
                       CppPreprocessor *preproc,
                       QStringList files);
@@ -210,9 +197,6 @@ private:
     QStringList m_frameworkPaths;
     QByteArray m_definedMacros;
 
-    QMap<QString, QStringList> m_includesInPaths;
-    QStringList m_headerSuffixes;
-
     // editor integration
     QMap<TextEditor::ITextEditor *, CppEditorSupport *> m_editorSupport;
 
diff --git a/src/plugins/cpptools/cpptoolsplugin.cpp b/src/plugins/cpptools/cpptoolsplugin.cpp
index 8bff1f858f..480cb3b7a2 100644
--- a/src/plugins/cpptools/cpptoolsplugin.cpp
+++ b/src/plugins/cpptools/cpptoolsplugin.cpp
@@ -149,11 +149,6 @@ void CppToolsPlugin::extensionsInitialized()
     m_fileSettings->fromSettings(Core::ICore::instance()->settings());
     if (!m_fileSettings->applySuffixesToMimeDB())
         qWarning("Unable to apply cpp suffixes to mime database (cpp mime types not found).\n");
-
-    // Initialize header suffixes
-    const Core::MimeDatabase *mimeDatabase = Core::ICore::instance()->mimeDatabase();
-    const Core::MimeType mimeType = mimeDatabase->findByType(QLatin1String("text/x-c++hdr"));
-    m_modelManager->setHeaderSuffixes(mimeType.suffixes());
 }
 
 ExtensionSystem::IPlugin::ShutdownFlag CppToolsPlugin::aboutToShutdown()