Clang: Introduce switching/adding of warning configurations

A warning configuration is a list of command line (warning) options for
libclang. Three non-editable built-in configurations are provided by
default. The user can copy a configuration to customize it.

This is still a global setting and it changes take effect after
re-opening a document. Both issues will be addressed in follow-up
changes.

Change-Id: I86667d7dc39ad31b88666454220e6da563797740
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@theqtcompany.com>
Reviewed-by: Marco Bubke <marco.bubke@theqtcompany.com>

src/plugins/clangcodemodel/clangeditordocumentprocessor.cpp

@@ -342,8 +342,8 @@ static QStringList languageOptions(const QString &filePath, CppTools::ProjectPar
 
 static QStringList fileArguments(const QString &filePath, CppTools::ProjectPart *projectPart)
 {
-    return QStringList(languageOptions(filePath, projectPart))
-         + CppTools::codeModelSettings()->extraClangOptions();
+    return languageOptions(filePath, projectPart)
+         + CppTools::codeModelSettings()->clangDiagnosticConfig().commandLineOptions();
 }
 
 ClangBackEnd::FileContainer

src/plugins/cpptools/clangdiagnosticconfig.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 "clangdiagnosticconfig.h"
+
+namespace CppTools {
+
+Core::Id ClangDiagnosticConfig::id() const
+{
+    return m_id;
+}
+
+void ClangDiagnosticConfig::setId(const Core::Id &id)
+{
+    m_id = id;
+}
+
+QString ClangDiagnosticConfig::displayName() const
+{
+    return m_displayName;
+}
+
+void ClangDiagnosticConfig::setDisplayName(const QString &displayName)
+{
+    m_displayName = displayName;
+}
+
+QStringList ClangDiagnosticConfig::commandLineOptions() const
+{
+    return m_commandLineOptions;
+}
+
+void ClangDiagnosticConfig::setCommandLineOptions(const QStringList &options)
+{
+    m_commandLineOptions = options;
+}
+
+bool ClangDiagnosticConfig::isReadOnly() const
+{
+    return m_isReadOnly;
+}
+
+void ClangDiagnosticConfig::setIsReadOnly(bool isReadOnly)
+{
+    m_isReadOnly = isReadOnly;
+}
+
+bool ClangDiagnosticConfig::operator==(const ClangDiagnosticConfig &other) const
+{
+    return m_id == other.m_id
+        && m_displayName == other.m_displayName
+        && m_commandLineOptions == other.m_commandLineOptions
+        && m_isReadOnly == other.m_isReadOnly;
+}
+
+} // namespace CppTools

src/plugins/cpptools/clangdiagnosticconfig.h

@@ -0,0 +1,63 @@
+/****************************************************************************
+**
+** 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 "cpptools_global.h"
+
+#include <coreplugin/id.h>
+
+#include <QStringList>
+#include <QVector>
+
+namespace CppTools {
+
+class CPPTOOLS_EXPORT ClangDiagnosticConfig
+{
+public:
+    Core::Id id() const;
+    void setId(const Core::Id &id);
+
+    QString displayName() const;
+    void setDisplayName(const QString &displayName);
+
+    QStringList commandLineOptions() const;
+    void setCommandLineOptions(const QStringList &commandLineOptions);
+
+    bool isReadOnly() const;
+    void setIsReadOnly(bool isReadOnly);
+
+    bool operator==(const ClangDiagnosticConfig &other) const;
+
+private:
+    Core::Id m_id;
+    QString m_displayName;
+    QStringList m_commandLineOptions;
+    bool m_isReadOnly = false;
+};
+
+using ClangDiagnosticConfigs = QVector<ClangDiagnosticConfig>;
+
+} // namespace CppTools

src/plugins/cpptools/clangdiagnosticconfigsmodel.cpp

@@ -0,0 +1,146 @@
+/****************************************************************************
+**
+** 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 "clangdiagnosticconfigsmodel.h"
+
+#include "cpptoolsconstants.h"
+
+#include <utils/algorithm.h>
+
+#include <QCoreApplication>
+
+namespace CppTools {
+namespace Internal {
+
+static void addConfigForQuestionableConstructs(ClangDiagnosticConfigsModel &model)
+{
+    ClangDiagnosticConfig config;
+    config.setId("Builtin.Questionable");
+    config.setDisplayName(QCoreApplication::translate("ClangDiagnosticConfigsModel",
+                                                      "Warnings for questionable constructs"));
+    config.setIsReadOnly(true);
+    config.setCommandLineOptions({
+        QStringLiteral("-Wall"),
+        QStringLiteral("-Wextra"),
+    });
+
+    model.appendOrUpdate(config);
+}
+
+static void addConfigForPedanticWarnings(ClangDiagnosticConfigsModel &model)
+{
+    ClangDiagnosticConfig config;
+    config.setId("Builtin.Pedantic");
+    config.setDisplayName(QCoreApplication::translate("ClangDiagnosticConfigsModel",
+                                                      "Pedantic Warnings"));
+    config.setIsReadOnly(true);
+    config.setCommandLineOptions({QStringLiteral("-Wpedantic")});
+
+    model.appendOrUpdate(config);
+}
+
+static void addConfigForAlmostEveryWarning(ClangDiagnosticConfigsModel &model)
+{
+    ClangDiagnosticConfig config;
+    config.setId(Constants::CPP_CLANG_BUILTIN_CONFIG_ID_EVERYTHING_WITH_EXCEPTIONS);
+    config.setDisplayName(QCoreApplication::translate("ClangDiagnosticConfigsModel",
+                                                      "Warnings for almost everything"));
+    config.setIsReadOnly(true);
+    config.setCommandLineOptions({
+        QStringLiteral("-Weverything"),
+        QStringLiteral("-Wno-c++98-compat"),
+        QStringLiteral("-Wno-c++98-compat-pedantic"),
+        QStringLiteral("-Wno-unused-macros"),
+        QStringLiteral("-Wno-newline-eof"),
+        QStringLiteral("-Wno-exit-time-destructors"),
+        QStringLiteral("-Wno-global-constructors"),
+        QStringLiteral("-Wno-gnu-zero-variadic-macro-arguments"),
+        QStringLiteral("-Wno-documentation"),
+        QStringLiteral("-Wno-shadow"),
+        QStringLiteral("-Wno-missing-prototypes"), // Not optimal for C projects.
+    });
+
+    model.appendOrUpdate(config);
+}
+
+static void addBuiltinConfigs(ClangDiagnosticConfigsModel &model)
+{
+    addConfigForPedanticWarnings(model);
+    addConfigForQuestionableConstructs(model);
+    addConfigForAlmostEveryWarning(model);
+}
+
+ClangDiagnosticConfigsModel::ClangDiagnosticConfigsModel(const ClangDiagnosticConfigs &customConfigs)
+{
+    addBuiltinConfigs(*this);
+
+    foreach (const ClangDiagnosticConfig &config, customConfigs)
+        m_diagnosticConfigs.append(config);
+}
+
+int ClangDiagnosticConfigsModel::size() const
+{
+    return m_diagnosticConfigs.size();
+}
+
+const ClangDiagnosticConfig &ClangDiagnosticConfigsModel::at(int index) const
+{
+    return m_diagnosticConfigs.at(index);
+}
+
+void ClangDiagnosticConfigsModel::appendOrUpdate(const ClangDiagnosticConfig &config)
+{
+    const int index = indexOfConfig(config.id());
+
+    if (index >= 0 && index < m_diagnosticConfigs.size())
+        m_diagnosticConfigs.replace(index, config);
+    else
+        m_diagnosticConfigs.append(config);
+}
+
+void ClangDiagnosticConfigsModel::removeConfigWithId(const Core::Id &id)
+{
+    m_diagnosticConfigs.removeOne(configWithId(id));
+}
+
+ClangDiagnosticConfigs ClangDiagnosticConfigsModel::configs() const
+{
+    return m_diagnosticConfigs;
+}
+
+const ClangDiagnosticConfig &ClangDiagnosticConfigsModel::configWithId(const Core::Id &id) const
+{
+    return m_diagnosticConfigs.at(indexOfConfig(id));
+}
+
+int ClangDiagnosticConfigsModel::indexOfConfig(const Core::Id &id) const
+{
+    return Utils::indexOf(m_diagnosticConfigs, [&](const ClangDiagnosticConfig &config) {
+       return config.id() == id;
+    });
+}
+
+} // namespace Internal
+} // namespace CppTools

src/plugins/cpptools/clangdiagnosticconfigsmodel.h

@@ -0,0 +1,55 @@
+/****************************************************************************
+**
+** 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 "clangdiagnosticconfig.h"
+
+namespace CppTools {
+namespace Internal {
+
+class ClangDiagnosticConfigsModel
+{
+public:
+    ClangDiagnosticConfigsModel(const ClangDiagnosticConfigs &customConfigs);
+
+    int size() const;
+    const ClangDiagnosticConfig &at(int index) const;
+
+    void appendOrUpdate(const ClangDiagnosticConfig &config);
+    void removeConfigWithId(const Core::Id &id);
+
+    ClangDiagnosticConfigs configs() const;
+    const ClangDiagnosticConfig &configWithId(const Core::Id &id) const;
+
+private:
+    int indexOfConfig(const Core::Id &id) const;
+
+private:
+    ClangDiagnosticConfigs m_diagnosticConfigs;
+};
+
+} // namespace Internal
+} // namespace CppTools

src/plugins/cpptools/clangdiagnosticconfigswidget.cpp

@@ -0,0 +1,196 @@
+/****************************************************************************
+**
+** 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 "clangdiagnosticconfigswidget.h"
+#include "ui_clangdiagnosticconfigswidget.h"
+
+#include <utils/algorithm.h>
+#include <utils/qtcassert.h>
+
+#include <QDebug>
+#include <QInputDialog>
+#include <QUuid>
+
+namespace CppTools {
+namespace Internal {
+
+ClangDiagnosticConfigsWidget::ClangDiagnosticConfigsWidget(
+        const ClangDiagnosticConfigs &customConfigs,
+        const Core::Id &configToSelect,
+        QWidget *parent)
+    : QWidget(parent)
+    , m_ui(new Ui::ClangDiagnosticConfigsWidget)
+    , m_diagnosticConfigsModel(customConfigs)
+{
+    m_ui->setupUi(this);
+
+    connect(m_ui->configChooserComboBox,
+            static_cast<void(QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
+            this,
+            &ClangDiagnosticConfigsWidget::onCurrentConfigChanged);
+    connect(m_ui->copyButton, &QPushButton::clicked,
+            this, &ClangDiagnosticConfigsWidget::onCopyButtonClicked);
+    connect(m_ui->removeButton, &QPushButton::clicked,
+            this, &ClangDiagnosticConfigsWidget::onRemoveButtonClicked);
+    connect(m_ui->diagnosticOptionsTextEdit->document(), &QTextDocument::contentsChanged,
+            this, &ClangDiagnosticConfigsWidget::onDiagnosticOptionsEdited);
+
+    syncWidgetsToModel(configToSelect);
+}
+
+ClangDiagnosticConfigsWidget::~ClangDiagnosticConfigsWidget()
+{
+    delete m_ui;
+}
+
+void ClangDiagnosticConfigsWidget::onCurrentConfigChanged(int)
+{
+    syncOtherWidgetsToComboBox();
+}
+
+static ClangDiagnosticConfig createCustomConfig(const ClangDiagnosticConfig &config,
+                                                const QString &displayName)
+{
+    ClangDiagnosticConfig copied = config;
+    copied.setId(Core::Id::fromString(QUuid::createUuid().toString()));
+    copied.setDisplayName(displayName);
+    copied.setIsReadOnly(false);
+
+    return copied;
+}
+
+void ClangDiagnosticConfigsWidget::onCopyButtonClicked()
+{
+    const ClangDiagnosticConfig &config = currentConfig();
+
+    bool diaglogAccepted = false;
+    const QString newName = QInputDialog::getText(this,
+                                                  tr("Copy Diagnostic Configuration"),
+                                                  tr("Diagnostic configuration name:"),
+                                                  QLineEdit::Normal,
+                                                  tr("%1 (Copy)").arg(config.displayName()),
+                                                  &diaglogAccepted);
+    if (diaglogAccepted) {
+        const ClangDiagnosticConfig customConfig = createCustomConfig(config, newName);
+        m_diagnosticConfigsModel.appendOrUpdate(customConfig);
+
+        syncConfigChooserToModel(customConfig.id());
+        m_ui->diagnosticOptionsTextEdit->setFocus();
+    }
+}
+
+void ClangDiagnosticConfigsWidget::onRemoveButtonClicked()
+{
+    m_diagnosticConfigsModel.removeConfigWithId(currentConfigId());
+
+    syncConfigChooserToModel();
+}
+
+void ClangDiagnosticConfigsWidget::onDiagnosticOptionsEdited()
+{
+    const QString diagnosticOptions
+            = m_ui->diagnosticOptionsTextEdit->document()->toPlainText().trimmed();
+    const QStringList updatedCommandLine
+            = diagnosticOptions.trimmed().split(QLatin1Char(' '), QString::SkipEmptyParts);
+
+    ClangDiagnosticConfig updatedConfig = currentConfig();
+    updatedConfig.setCommandLineOptions(updatedCommandLine);
+
+    m_diagnosticConfigsModel.appendOrUpdate(updatedConfig);
+}
+
+void ClangDiagnosticConfigsWidget::syncWidgetsToModel(const Core::Id &configToSelect)
+{
+    syncConfigChooserToModel(configToSelect);
+    syncOtherWidgetsToComboBox();
+}
+
+static QString adaptedDisplayName(const ClangDiagnosticConfig &config)
+{
+    return config.isReadOnly()
+        ? QObject::tr("%1 [built-in]").arg(config.displayName())
+        : config.displayName();
+}
+
+void ClangDiagnosticConfigsWidget::syncConfigChooserToModel(const Core::Id &configToSelect)
+{
+    m_ui->configChooserComboBox->clear();
+    int currentIndex = -1;
+
+    const int size = m_diagnosticConfigsModel.size();
+    for (int i = 0; i < size; ++i) {
+        const ClangDiagnosticConfig &config = m_diagnosticConfigsModel.at(i);
+        m_ui->configChooserComboBox->addItem(adaptedDisplayName(config), config.id().toSetting());
+
+        if (configToSelect == config.id())
+            currentIndex = i;
+    }
+
+    if (currentIndex != -1)
+        m_ui->configChooserComboBox->setCurrentIndex(currentIndex);
+}
+
+void ClangDiagnosticConfigsWidget::syncOtherWidgetsToComboBox()
+{
+    if (isConfigChooserEmpty())
+        return;
+
+    const ClangDiagnosticConfig &config = currentConfig();
+
+    // Update main button row
+    m_ui->removeButton->setEnabled(!config.isReadOnly());
+
+    // Update child widgets
+    const QString commandLineOptions = config.commandLineOptions().join(QLatin1Char(' '));
+    m_ui->diagnosticOptionsTextEdit->document()->setPlainText(commandLineOptions);
+    m_ui->diagnosticOptionsTextEdit->setReadOnly(config.isReadOnly());
+}
+
+bool ClangDiagnosticConfigsWidget::isConfigChooserEmpty() const
+{
+    return m_ui->configChooserComboBox->count() == 0;
+}
+
+const ClangDiagnosticConfig &ClangDiagnosticConfigsWidget::currentConfig() const
+{
+    return m_diagnosticConfigsModel.configWithId(currentConfigId());
+}
+
+Core::Id ClangDiagnosticConfigsWidget::currentConfigId() const
+{
+    return Core::Id::fromSetting(m_ui->configChooserComboBox->currentData());
+}
+
+ClangDiagnosticConfigs ClangDiagnosticConfigsWidget::customConfigs() const
+{
+    const ClangDiagnosticConfigs allConfigs = m_diagnosticConfigsModel.configs();
+
+    return Utils::filtered(allConfigs, [](const ClangDiagnosticConfig &config){
+        return !config.isReadOnly();
+    });
+}
+
+} // Internal namespace
+} // CppTools namespace

src/plugins/cpptools/clangdiagnosticconfigswidget.h

@@ -0,0 +1,73 @@
+/****************************************************************************
+**
+** 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 "clangdiagnosticconfig.h"
+#include "clangdiagnosticconfigsmodel.h"
+
+#include <QWidget>
+
+namespace CppTools {
+namespace Internal {
+
+namespace Ui { class ClangDiagnosticConfigsWidget; }
+
+class ClangDiagnosticConfigsWidget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit ClangDiagnosticConfigsWidget(const ClangDiagnosticConfigs &customConfigs,
+                                          const Core::Id &configToSelect,
+                                          QWidget *parent = 0);
+
+    Core::Id currentConfigId() const;
+    ClangDiagnosticConfigs customConfigs() const;
+
+    ~ClangDiagnosticConfigsWidget();
+
+private slots:
+    void onCurrentConfigChanged(int);
+    void onCopyButtonClicked();
+    void onRemoveButtonClicked();
+
+    void onDiagnosticOptionsEdited();
+
+private:
+    void syncWidgetsToModel(const Core::Id &configToSelect = Core::Id());
+    void syncConfigChooserToModel(const Core::Id &configToSelect = Core::Id());
+    void syncOtherWidgetsToComboBox();
+
+    bool isConfigChooserEmpty() const;
+    const ClangDiagnosticConfig &currentConfig() const;
+
+private:
+    Ui::ClangDiagnosticConfigsWidget *m_ui;
+    ClangDiagnosticConfigsModel m_diagnosticConfigsModel;
+};
+
+} // Internal namespace
+} // CppTools namespace

src/plugins/cpptools/clangdiagnosticconfigswidget.ui

@@ -0,0 +1,81 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>CppTools::Internal::ClangDiagnosticConfigsWidget</class>
+ <widget class="QWidget" name="CppTools::Internal::ClangDiagnosticConfigsWidget">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>545</width>
+    <height>300</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Form</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <property name="leftMargin">
+    <number>0</number>
+   </property>
+   <property name="topMargin">
+    <number>0</number>
+   </property>
+   <property name="rightMargin">
+    <number>0</number>
+   </property>
+   <property name="bottomMargin">
+    <number>0</number>
+   </property>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <widget class="QLabel" name="label_2">
+       <property name="text">
+        <string>Configuration to use:</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QComboBox" name="configChooserComboBox">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="copyButton">
+       <property name="text">
+        <string>Copy...</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="removeButton">
+       <property name="text">
+        <string>Remove</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <widget class="QPlainTextEdit" name="diagnosticOptionsTextEdit"/>
+   </item>
+   <item>
+    <widget class="QLabel" name="label">
+     <property name="text">
+      <string>For appropriate options, consult the GCC or Clang manual pages or the &lt;a href=&quot;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html&quot;&gt;GCC online documentation&lt;/a&gt;.</string>
+     </property>
+     <property name="openExternalLinks">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

src/plugins/cpptools/cppcodemodelsettings.cpp

@@ -24,24 +24,63 @@
 ****************************************************************************/
 
 #include "cppcodemodelsettings.h"
+
+#include "clangdiagnosticconfigsmodel.h"
 #include "cpptoolsconstants.h"
 
+#include <utils/qtcassert.h>
+
 #include <QSettings>
 
 using namespace CppTools;
 
-static QLatin1String cppHeaderMimeType(Constants::CPP_HEADER_MIMETYPE);
-static QLatin1String cHeaderMimeType(Constants::C_HEADER_MIMETYPE);
-static QLatin1String clangExtraOptionsKey(Constants::CPPTOOLS_EXTRA_CLANG_OPTIONS);
+static Core::Id initialClangDiagnosticConfigId()
+{ return Core::Id(Constants::CPP_CLANG_BUILTIN_CONFIG_ID_EVERYTHING_WITH_EXCEPTIONS); }
+
+static CppCodeModelSettings::PCHUsage initialPchUsage()
+{ return CppCodeModelSettings::PchUse_None; }
+
+static QString clangDiagnosticConfigKey()
+{ return QStringLiteral("ClangDiagnosticConfig"); }
+
+static QString clangDiagnosticConfigsArrayKey()
+{ return QStringLiteral("ClangDiagnosticConfigs"); }
+
+static QString clangDiagnosticConfigsArrayIdKey()
+{ return QLatin1String("id"); }
+
+static QString clangDiagnosticConfigsArrayDisplayNameKey()
+{ return QLatin1String("displayName"); }
+
+static QString clangDiagnosticConfigsArrayOptionsKey()
+{ return QLatin1String("diagnosticOptions"); }
+
+static QString pchUsageKey()
+{ return QLatin1String(Constants::CPPTOOLS_MODEL_MANAGER_PCH_USAGE); }
 
 void CppCodeModelSettings::fromSettings(QSettings *s)
 {
     s->beginGroup(QLatin1String(Constants::CPPTOOLS_SETTINGSGROUP));
 
-    setExtraClangOptions(s->value(clangExtraOptionsKey, defaultExtraClangOptions()).toStringList());
+    const int size = s->beginReadArray(clangDiagnosticConfigsArrayKey());
+    for (int i = 0; i < size; ++i) {
+        s->setArrayIndex(i);
 
-    QVariant v = s->value(QLatin1String(Constants::CPPTOOLS_MODEL_MANAGER_PCH_USAGE), PchUse_None);
-    setPCHUsage(static_cast<PCHUsage>(v.toInt()));
+        ClangDiagnosticConfig config;
+        config.setId(Core::Id::fromSetting(s->value(clangDiagnosticConfigsArrayIdKey())));
+        config.setDisplayName(s->value(clangDiagnosticConfigsArrayDisplayNameKey()).toString());
+        config.setCommandLineOptions(s->value(clangDiagnosticConfigsArrayOptionsKey()).toStringList());
+        m_clangCustomDiagnosticConfigs.append(config);
+    }
+    s->endArray();
+
+    const Core::Id diagnosticConfigId = Core::Id::fromSetting(
+                                            s->value(clangDiagnosticConfigKey(),
+                                                     initialClangDiagnosticConfigId().toSetting()));
+    setClangDiagnosticConfigId(diagnosticConfigId);
+
+    const QVariant pchUsageVariant = s->value(pchUsageKey(), initialPchUsage());
+    setPCHUsage(static_cast<PCHUsage>(pchUsageVariant.toInt()));
     s->endGroup();
 
     emit changed();
@@ -51,39 +90,50 @@ void CppCodeModelSettings::toSettings(QSettings *s)
 {
     s->beginGroup(QLatin1String(Constants::CPPTOOLS_SETTINGSGROUP));
 
-    s->setValue(clangExtraOptionsKey, extraClangOptions());
-    s->setValue(QLatin1String(Constants::CPPTOOLS_MODEL_MANAGER_PCH_USAGE), pchUsage());
+    s->beginWriteArray(clangDiagnosticConfigsArrayKey());
+    for (int i = 0, size = m_clangCustomDiagnosticConfigs.size(); i < size; ++i) {
+        const ClangDiagnosticConfig &config = m_clangCustomDiagnosticConfigs.at(i);
+
+        s->setArrayIndex(i);
+        s->setValue(clangDiagnosticConfigsArrayIdKey(), config.id().toSetting());
+        s->setValue(clangDiagnosticConfigsArrayDisplayNameKey(), config.displayName());
+        s->setValue(clangDiagnosticConfigsArrayOptionsKey(), config.commandLineOptions());
+    }
+    s->endArray();
+
+    s->setValue(clangDiagnosticConfigKey(), clangDiagnosticConfigId().toSetting());
+    s->setValue(pchUsageKey(), pchUsage());
 
     s->endGroup();
 
     emit changed();
 }
 
-QStringList CppCodeModelSettings::defaultExtraClangOptions()
+Core::Id CppCodeModelSettings::clangDiagnosticConfigId() const
 {
-    return {
-        QStringLiteral("-Weverything"),
-        QStringLiteral("-Wno-c++98-compat"),
-        QStringLiteral("-Wno-c++98-compat-pedantic"),
-        QStringLiteral("-Wno-unused-macros"),
-        QStringLiteral("-Wno-newline-eof"),
-        QStringLiteral("-Wno-exit-time-destructors"),
-        QStringLiteral("-Wno-global-constructors"),
-        QStringLiteral("-Wno-gnu-zero-variadic-macro-arguments"),
-        QStringLiteral("-Wno-documentation"),
-        QStringLiteral("-Wno-shadow"),
-        QStringLiteral("-Wno-missing-prototypes"), // Not optimal for C projects.
-    };
+    return m_clangDiagnosticConfigId;
 }
 
-QStringList CppCodeModelSettings::extraClangOptions() const
+void CppCodeModelSettings::setClangDiagnosticConfigId(const Core::Id &configId)
 {
-    return m_extraClangOptions;
+    m_clangDiagnosticConfigId = configId;
 }
 
-void CppCodeModelSettings::setExtraClangOptions(const QStringList &extraClangOptions)
+const ClangDiagnosticConfig CppCodeModelSettings::clangDiagnosticConfig() const
 {
-    m_extraClangOptions = extraClangOptions;
+    const Internal::ClangDiagnosticConfigsModel configsModel(m_clangCustomDiagnosticConfigs);
+
+    return configsModel.configWithId(clangDiagnosticConfigId());
+}
+
+ClangDiagnosticConfigs CppCodeModelSettings::clangCustomDiagnosticConfigs() const
+{
+    return m_clangCustomDiagnosticConfigs;
+}
+
+void CppCodeModelSettings::setClangCustomDiagnosticConfigs(const ClangDiagnosticConfigs &configs)
+{
+    m_clangCustomDiagnosticConfigs = configs;
 }
 
 CppCodeModelSettings::PCHUsage CppCodeModelSettings::pchUsage() const

src/plugins/cpptools/cppcodemodelsettings.h

@@ -28,6 +28,8 @@
 
 #include "cpptools_global.h"
 
+#include "clangdiagnosticconfigsmodel.h"
+
 #include <QObject>
 #include <QStringList>
 
@@ -52,9 +54,12 @@ public:
     void toSettings(QSettings *s);
 
 public:
-    static QStringList defaultExtraClangOptions();
-    QStringList extraClangOptions() const;
-    void setExtraClangOptions(const QStringList &extraClangOptions);
+    Core::Id clangDiagnosticConfigId() const;
+    void setClangDiagnosticConfigId(const Core::Id &configId);
+    const ClangDiagnosticConfig clangDiagnosticConfig() const;
+
+    ClangDiagnosticConfigs clangCustomDiagnosticConfigs() const;
+    void setClangCustomDiagnosticConfigs(const ClangDiagnosticConfigs &configs);
 
     PCHUsage pchUsage() const;
     void setPCHUsage(PCHUsage pchUsage);
@@ -64,10 +69,12 @@ public: // for tests
 
 signals:
     void changed();
+    void clangDiagnosticConfigIdChanged();
 
 private:
-    QStringList m_extraClangOptions;
     PCHUsage m_pchUsage = PchUse_None;
+    ClangDiagnosticConfigs m_clangCustomDiagnosticConfigs;
+    Core::Id m_clangDiagnosticConfigId;
 };
 
 } // namespace CppTools

src/plugins/cpptools/cppcodemodelsettingspage.cpp

@@ -24,6 +24,8 @@
 ****************************************************************************/
 
 #include "cppcodemodelsettingspage.h"
+
+#include "clangdiagnosticconfigswidget.h"
 #include "cppmodelmanager.h"
 #include "cpptoolsconstants.h"
 #include "ui_cppcodemodelsettingspage.h"
@@ -43,10 +45,6 @@ CppCodeModelSettingsWidget::CppCodeModelSettingsWidget(QWidget *parent)
     m_ui->setupUi(this);
 
     m_ui->clangSettingsGroupBox->setVisible(true);
-    connect(m_ui->clangOptionsResetButton, &QPushButton::clicked, [this]() {
-        const QString options = m_settings->defaultExtraClangOptions().join(QLatin1Char('\n'));
-        m_ui->clangOptionsToAppendTextEdit->document()->setPlainText(options);
-    });
 }
 
 CppCodeModelSettingsWidget::~CppCodeModelSettingsWidget()
@@ -73,15 +71,17 @@ void CppCodeModelSettingsWidget::applyToSettings() const
         m_settings->toSettings(Core::ICore::settings());
 }
 
-void CppCodeModelSettingsWidget::setupClangCodeModelWidgets() const
+void CppCodeModelSettingsWidget::setupClangCodeModelWidgets()
 {
     const bool isClangActive = CppModelManager::instance()->isClangCodeModelActive();
 
     m_ui->activateClangCodeModelPluginHint->setVisible(!isClangActive);
     m_ui->clangSettingsGroupBox->setEnabled(isClangActive);
 
-    const QString extraClangOptions = m_settings->extraClangOptions().join(QLatin1Char('\n'));
-    m_ui->clangOptionsToAppendTextEdit->document()->setPlainText(extraClangOptions);
+    m_clangDiagnosticConfigsWidget = new ClangDiagnosticConfigsWidget(
+                                            m_settings->clangCustomDiagnosticConfigs(),
+                                            m_settings->clangDiagnosticConfigId());
+    m_ui->clangSettingsGroupBox->layout()->addWidget(m_clangDiagnosticConfigsWidget);
 }
 
 void CppCodeModelSettingsWidget::setupPchCheckBox() const
@@ -94,12 +94,18 @@ bool CppCodeModelSettingsWidget::applyClangCodeModelWidgetsToSettings() const
 {
     bool settingsChanged = false;
 
-    const QStringList previousOptions = m_settings->extraClangOptions();
-    const QString newOptionsAsString = m_ui->clangOptionsToAppendTextEdit->document()->toPlainText();
-    const QStringList newOptions = newOptionsAsString.split(QLatin1Char('\n'),
-                                                            QString::SkipEmptyParts);
-    if (newOptions != previousOptions) {
-        m_settings->setExtraClangOptions(newOptions);
+    const Core::Id oldConfigId = m_settings->clangDiagnosticConfigId();
+    const Core::Id currentConfigId = m_clangDiagnosticConfigsWidget->currentConfigId();
+    if (oldConfigId != currentConfigId) {
+        m_settings->setClangDiagnosticConfigId(currentConfigId);
+        settingsChanged = true;
+    }
+
+    const ClangDiagnosticConfigs oldDiagnosticConfigs = m_settings->clangCustomDiagnosticConfigs();
+    const ClangDiagnosticConfigs currentDiagnosticConfigs
+            = m_clangDiagnosticConfigsWidget->customConfigs();
+    if (oldDiagnosticConfigs != currentDiagnosticConfigs) {
+        m_settings->setClangCustomDiagnosticConfigs(currentDiagnosticConfigs);
         settingsChanged = true;
     }
 

src/plugins/cpptools/cppcodemodelsettingspage.h

@@ -39,6 +39,8 @@ QT_FORWARD_DECLARE_CLASS(QSettings)
 namespace CppTools {
 namespace Internal {
 
+class ClangDiagnosticConfigsWidget;
+
 namespace Ui { class CppCodeModelSettingsPage; }
 
 class CppCodeModelSettingsWidget: public QWidget
@@ -53,7 +55,7 @@ public:
     void applyToSettings() const;
 
 private:
-    void setupClangCodeModelWidgets() const;
+    void setupClangCodeModelWidgets();
     void setupPchCheckBox() const;
 
     bool applyClangCodeModelWidgetsToSettings() const;
@@ -61,6 +63,7 @@ private:
 
 private:
     Ui::CppCodeModelSettingsPage *m_ui;
+    QPointer<ClangDiagnosticConfigsWidget> m_clangDiagnosticConfigsWidget;
     QSharedPointer<CppCodeModelSettings> m_settings;
 };
 

src/plugins/cpptools/cppcodemodelsettingspage.ui

@@ -24,47 +24,12 @@
    <item>
     <widget class="QGroupBox" name="clangSettingsGroupBox">
      <property name="title">
-      <string>Clang Code Model</string>
+      <string>Clang Code Model Warnings</string>
      </property>
      <property name="checkable">
       <bool>false</bool>
      </property>
-     <layout class="QVBoxLayout" name="verticalLayout_3">
-      <item>
-       <widget class="QLabel" name="clangOptionsGeneralHintLabel">
-        <property name="text">
-         <string>Append additional command line options to Clang, one per line. &lt;i&gt;Use this with care.&lt;/i&gt;</string>
-        </property>
-       </widget>
-      </item>
-      <item>
-       <widget class="QPlainTextEdit" name="clangOptionsToAppendTextEdit"/>
-      </item>
-      <item>
-       <layout class="QHBoxLayout" name="horizontalLayout">
-        <item>
-         <widget class="QPushButton" name="clangOptionsResetButton">
-          <property name="text">
-           <string>Reset Options</string>
-          </property>
-         </widget>
-        </item>
-        <item>
-         <spacer name="horizontalSpacer">
-          <property name="orientation">
-           <enum>Qt::Horizontal</enum>
-          </property>
-          <property name="sizeHint" stdset="0">
-           <size>
-            <width>40</width>
-            <height>20</height>
-           </size>
-          </property>
-         </spacer>
-        </item>
-       </layout>
-      </item>
-     </layout>
+     <layout class="QVBoxLayout" name="verticalLayout_3"/>
     </widget>
    </item>
    <item>

src/plugins/cpptools/cpptools.pro

@@ -9,6 +9,9 @@ HEADERS += \
     builtineditordocumentparser.h \
     builtineditordocumentprocessor.h \
     builtinindexingsupport.h \
+    clangdiagnosticconfig.h \
+    clangdiagnosticconfigsmodel.h \
+    clangdiagnosticconfigswidget.h \
     commentssettings.h \
     completionsettingspage.h \
     cppchecksymbols.h \
@@ -84,6 +87,9 @@ SOURCES += \
     builtineditordocumentparser.cpp \
     builtineditordocumentprocessor.cpp \
     builtinindexingsupport.cpp \
+    clangdiagnosticconfig.cpp \
+    clangdiagnosticconfigsmodel.cpp \
+    clangdiagnosticconfigswidget.cpp \
     commentssettings.cpp \
     completionsettingspage.cpp \
     cppchecksymbols.cpp \
@@ -149,6 +155,7 @@ SOURCES += \
     compileroptionsbuilder.cpp
 
 FORMS += \
+    clangdiagnosticconfigswidget.ui \
     completionsettingspage.ui \
     cppcodemodelsettingspage.ui \
     cppcodestylesettingspage.ui \

src/plugins/cpptools/cpptools.qbs

@@ -31,6 +31,10 @@ QtcPlugin {
         "builtineditordocumentparser.cpp", "builtineditordocumentparser.h",
         "builtineditordocumentprocessor.cpp", "builtineditordocumentprocessor.h",
         "builtinindexingsupport.cpp", "builtinindexingsupport.h",
+        "clangdiagnosticconfig.cpp", "clangdiagnosticconfig.h",
+        "clangdiagnosticconfigsmodel.cpp", "clangdiagnosticconfigsmodel.h",
+        "clangdiagnosticconfigswidget.cpp", "clangdiagnosticconfigswidget.h",
+        "clangdiagnosticconfigswidget.ui",
         "compileroptionsbuilder.cpp", "compileroptionsbuilder.h",
         "commentssettings.cpp", "commentssettings.h",
         "completionsettingspage.cpp", "completionsettingspage.h", "completionsettingspage.ui",

src/plugins/cpptools/cpptoolsconstants.h

@@ -49,7 +49,8 @@ const char LOWERCASE_CPPFILES_KEY[] = "LowerCaseFiles";
 enum { lowerCaseFilesDefault = 1 };
 const char CPPTOOLS_SORT_EDITOR_DOCUMENT_OUTLINE[] = "SortedMethodOverview";
 const char CPPTOOLS_MODEL_MANAGER_PCH_USAGE[] = "PCHUsage";
-const char CPPTOOLS_EXTRA_CLANG_OPTIONS[] = "ExtraClangOptions";
+
+const char CPP_CLANG_BUILTIN_CONFIG_ID_EVERYTHING_WITH_EXCEPTIONS[] = "Builtin.EverythingWithExceptions";
 
 const char CPP_CODE_STYLE_SETTINGS_ID[] = "A.Cpp.Code Style";
 const char CPP_CODE_STYLE_SETTINGS_NAME[] = QT_TRANSLATE_NOOP("CppTools", "Code Style");