ClangTools: Add UI for specifying executables

Add a new group box "Executables" for this. Hide the UI for
clazy-standalone unless QTC_USE_CLAZY_STANDALONE_PATH is set as there is
no released version with the needed -export-fixes option.

Rename the previous group box from "General" to "Run Options".

Change-Id: Ia9daf66c40d3a7eea98b31d9c086886d29466490
Reviewed-by: Cristian Adam <cristian.adam@qt.io>
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>

10 files changed, 273 insertions, 7 deletions

diff --git a/src/plugins/clangtools/clangtidyclazyrunner.cpp b/src/plugins/clangtools/clangtidyclazyrunner.cpp
index 1a3a0cea47..59a2f5d216 100644
--- a/src/plugins/clangtools/clangtidyclazyrunner.cpp
+++ b/src/plugins/clangtools/clangtidyclazyrunner.cpp
@@ -26,6 +26,7 @@
 #include "clangtidyclazyrunner.h"
 
 #include "clangtoolssettings.h"
+#include "clangtoolsutils.h"
 
 #include <coreplugin/icore.h>
 
@@ -121,7 +122,7 @@ ClangTidyRunner::ClangTidyRunner(const ClangDiagnosticConfig &config, QObject *p
 {
     setName(tr("Clang-Tidy"));
     setOutputFileFormat(OutputFileFormat::Yaml);
-    setExecutable(Core::ICore::clangTidyExecutable(CLANG_BINDIR));
+    setExecutable(clangTidyExecutable());
     setArgsCreator([this, config](const QStringList &baseOptions) {
         return QStringList()
             << tidyChecksArguments(config)
@@ -136,7 +137,7 @@ ClazyStandaloneRunner::ClazyStandaloneRunner(const ClangDiagnosticConfig &config
 {
     setName(tr("Clazy"));
     setOutputFileFormat(OutputFileFormat::Yaml);
-    setExecutable(qEnvironmentVariable("QTC_USE_CLAZY_STANDALONE_PATH"));
+    setExecutable(clazyStandaloneExecutable());
     setArgsCreator([this, config](const QStringList &baseOptions) {
         return QStringList()
             << clazyChecksArguments(config)
diff --git a/src/plugins/clangtools/clangtoolruncontrol.cpp b/src/plugins/clangtools/clangtoolruncontrol.cpp
index 578839bbbb..eed06d5841 100644
--- a/src/plugins/clangtools/clangtoolruncontrol.cpp
+++ b/src/plugins/clangtools/clangtoolruncontrol.cpp
@@ -310,7 +310,7 @@ void ClangToolRunWorker::start()
 
     m_queue.clear();
     for (const AnalyzeUnit &unit : unitsToProcess) {
-        for (auto creator : runnerCreators())
+        for (const RunnerCreator &creator : runnerCreators())
             m_queue << QueueItem{unit, creator};
     }
     m_initialQueueSize = m_queue.count();
@@ -378,6 +378,18 @@ void ClangToolRunWorker::analyzeNextFile()
 
     ClangToolRunner *runner = queueItem.runnerCreator();
     m_runners.insert(runner);
+
+    const QString executable = runner->executable();
+    if (!isFileExecutable(executable)) {
+        const QString errorMessage = tr("%1: Invalid executable \"%2\", stop.")
+                                         .arg(runner->name(), executable);
+        TaskHub::addTask(Task::Error, errorMessage, Debugger::Constants::ANALYZERTASK_ID);
+        TaskHub::requestPopup();
+        reportFailure(errorMessage);
+        stop();
+        return;
+    }
+
     QTC_ASSERT(runner->run(unit.file, unit.arguments), return);
 
     appendMessage(tr("Analyzing \"%1\" [%2].")
diff --git a/src/plugins/clangtools/clangtoolrunner.h b/src/plugins/clangtools/clangtoolrunner.h
index e38b5bcc4a..493722ca64 100644
--- a/src/plugins/clangtools/clangtoolrunner.h
+++ b/src/plugins/clangtools/clangtoolrunner.h
@@ -62,6 +62,7 @@ public:
 
     QString name() const { return m_name; }
     OutputFileFormat outputFileFormat() const { return m_outputFileFormat; }
+    QString executable() const { return m_executable; }
     QString filePath() const { return m_filePath; }
     QString logFilePath() const { return m_logFile; }
 
diff --git a/src/plugins/clangtools/clangtoolsconstants.h b/src/plugins/clangtools/clangtoolsconstants.h
index 6bfe64ca87..0b711162c9 100644
--- a/src/plugins/clangtools/clangtoolsconstants.h
+++ b/src/plugins/clangtools/clangtoolsconstants.h
@@ -32,5 +32,8 @@ const char SETTINGS_PAGE_ID[] = "Analyzer.ClangTools.Settings";
 const char SETTINGS_ID[] = "ClangTools";
 const char CLANGTIDYCLAZY_RUN_MODE[] = "ClangTidyClazy.RunMode";
 
+const char CLANG_TIDY_EXECUTABLE_NAME[] = "clang-tidy";
+const char CLAZY_STANDALONE_EXECUTABLE_NAME[] = "clazy-standalone";
+
 } // Constants
 } // ClangTools
diff --git a/src/plugins/clangtools/clangtoolssettings.cpp b/src/plugins/clangtools/clangtoolssettings.cpp
index 059f15ecbf..86f152f660 100644
--- a/src/plugins/clangtools/clangtoolssettings.cpp
+++ b/src/plugins/clangtools/clangtoolssettings.cpp
@@ -38,6 +38,8 @@
 static const char simultaneousProcessesKey[] = "simultaneousProcesses";
 static const char buildBeforeAnalysisKey[] = "buildBeforeAnalysis";
 static const char diagnosticConfigIdKey[] = "diagnosticConfigId";
+static const char clangTidyExecutableKey[] = "clangTidyExecutable";
+static const char clazyStandaloneExecutableKey[] = "clazyStandaloneExecutable";
 
 namespace ClangTools {
 namespace Internal {
@@ -106,6 +108,36 @@ void ClangToolsSettings::updateSavedBuildBeforeAnalysiIfRequired()
     emit buildBeforeAnalysisChanged(m_savedBuildBeforeAnalysis);
 }
 
+QString ClangToolsSettings::savedClazyStandaloneExecutable() const
+{
+    return m_savedClazyStandaloneExecutable;
+}
+
+QString ClangToolsSettings::savedClangTidyExecutable() const
+{
+    return m_savedClangTidyExecutable;
+}
+
+QString ClangToolsSettings::clazyStandaloneExecutable() const
+{
+    return m_clazyStandaloneExecutable;
+}
+
+void ClangToolsSettings::setClazyStandaloneExecutable(const QString &path)
+{
+    m_clazyStandaloneExecutable = path;
+}
+
+QString ClangToolsSettings::clangTidyExecutable() const
+{
+    return m_clangTidyExecutable;
+}
+
+void ClangToolsSettings::setClangTidyExecutable(const QString &path)
+{
+    m_clangTidyExecutable = path;
+}
+
 void ClangToolsSettings::readSettings()
 {
     QSettings *settings = Core::ICore::settings();
@@ -118,6 +150,11 @@ void ClangToolsSettings::readSettings()
 
     m_buildBeforeAnalysis = settings->value(QString(buildBeforeAnalysisKey), true).toBool();
 
+    m_savedClangTidyExecutable = m_clangTidyExecutable
+        = settings->value(QLatin1String(clangTidyExecutableKey)).toString();
+    m_savedClazyStandaloneExecutable = m_clazyStandaloneExecutable
+        = settings->value(QLatin1String(clazyStandaloneExecutableKey)).toString();
+
     m_diagnosticConfigId = Core::Id::fromSetting(settings->value(QString(diagnosticConfigIdKey)));
     if (!m_diagnosticConfigId.isValid())
         m_diagnosticConfigId = "Builtin.TidyAndClazy";
@@ -135,10 +172,14 @@ void ClangToolsSettings::writeSettings()
     settings->beginGroup(QString(Constants::SETTINGS_ID));
     settings->setValue(QString(simultaneousProcessesKey), m_simultaneousProcesses);
     settings->setValue(QString(buildBeforeAnalysisKey), m_buildBeforeAnalysis);
+    settings->setValue(QString(clangTidyExecutableKey), m_clangTidyExecutable);
+    settings->setValue(QString(clazyStandaloneExecutableKey), m_clazyStandaloneExecutable);
     settings->setValue(QString(diagnosticConfigIdKey), m_diagnosticConfigId.toSetting());
 
     m_savedSimultaneousProcesses = m_simultaneousProcesses;
     m_savedDiagnosticConfigId = m_diagnosticConfigId;
+    m_savedClangTidyExecutable = m_clangTidyExecutable;
+    m_savedClazyStandaloneExecutable = m_clazyStandaloneExecutable;
     updateSavedBuildBeforeAnalysiIfRequired();
 
     settings->endGroup();
diff --git a/src/plugins/clangtools/clangtoolssettings.h b/src/plugins/clangtools/clangtoolssettings.h
index 07f5bc7f47..402845d20f 100644
--- a/src/plugins/clangtools/clangtoolssettings.h
+++ b/src/plugins/clangtools/clangtoolssettings.h
@@ -33,6 +33,7 @@
 namespace ClangTools {
 namespace Internal {
 
+// TODO: Remove need for "saved* members
 class ClangToolsSettings : public QObject
 {
     Q_OBJECT
@@ -44,6 +45,8 @@ public:
     int savedSimultaneousProcesses() const;
     bool savedBuildBeforeAnalysis() const;
     Core::Id savedDiagnosticConfigId() const;
+    QString savedClangTidyExecutable() const;
+    QString savedClazyStandaloneExecutable() const;
 
     int simultaneousProcesses() const;
     void setSimultaneousProcesses(int processes);
@@ -54,6 +57,12 @@ public:
     Core::Id diagnosticConfigId() const;
     void setDiagnosticConfigId(Core::Id id);
 
+    QString clangTidyExecutable() const;
+    void setClangTidyExecutable(const QString &path);
+
+    QString clazyStandaloneExecutable() const;
+    void setClazyStandaloneExecutable(const QString &path);
+
 signals:
     void buildBeforeAnalysisChanged(bool checked) const;
 
@@ -67,6 +76,10 @@ private:
     int m_savedSimultaneousProcesses = -1;
     bool m_buildBeforeAnalysis = false;
     bool m_savedBuildBeforeAnalysis= false;
+    QString m_clangTidyExecutable;
+    QString m_savedClangTidyExecutable;
+    QString m_clazyStandaloneExecutable;
+    QString m_savedClazyStandaloneExecutable;
     Core::Id m_diagnosticConfigId;
     Core::Id m_savedDiagnosticConfigId;
 };
diff --git a/src/plugins/clangtools/clangtoolsutils.cpp b/src/plugins/clangtools/clangtoolsutils.cpp
index 173d97e31d..acb87f5ec1 100644
--- a/src/plugins/clangtools/clangtoolsutils.cpp
+++ b/src/plugins/clangtools/clangtoolsutils.cpp
@@ -26,6 +26,7 @@
 #include "clangtoolsutils.h"
 
 #include "clangtool.h"
+#include "clangtoolsconstants.h"
 #include "clangtoolsdiagnostic.h"
 #include "clangtoolssettings.h"
 
@@ -70,5 +71,88 @@ void showHintAboutBuildBeforeAnalysis()
         "ClangToolsDisablingBuildBeforeAnalysisHint");
 }
 
+bool isFileExecutable(const QString &filePath)
+{
+    if (filePath.isEmpty())
+        return false;
+
+    const QFileInfo fileInfo(filePath);
+    return fileInfo.isFile() && fileInfo.isExecutable();
+}
+
+QString shippedClangTidyExecutable()
+{
+    const QString shippedExecutable = Core::ICore::clangTidyExecutable(CLANG_BINDIR);
+    if (isFileExecutable(shippedExecutable))
+        return shippedExecutable;
+    return {};
+}
+
+QString shippedClazyStandaloneExecutable()
+{
+    const QString shippedExecutable = Core::ICore::clazyStandaloneExecutable(CLANG_BINDIR);
+    if (isFileExecutable(shippedExecutable))
+        return shippedExecutable;
+    return {};
+}
+
+static QString fullPath(const QString &executable)
+{
+    const QString hostExeSuffix = QLatin1String(QTC_HOST_EXE_SUFFIX);
+    const Qt::CaseSensitivity caseSensitivity = Utils::HostOsInfo::fileNameCaseSensitivity();
+
+    QString candidate = executable;
+    const bool hasSuffix = candidate.endsWith(hostExeSuffix, caseSensitivity);
+
+    const QFileInfo fileInfo = QFileInfo(candidate);
+    if (fileInfo.isAbsolute()) {
+        if (!hasSuffix)
+            candidate.append(hostExeSuffix);
+    } else {
+        const Utils::Environment environment = Utils::Environment::systemEnvironment();
+        const QString expandedPath = environment.searchInPath(candidate).toString();
+        if (!expandedPath.isEmpty())
+            candidate = expandedPath;
+    }
+
+    return candidate;
+}
+
+static QString findValidExecutable(const QStringList &candidates)
+{
+    for (QString candidate : candidates) {
+        const QString expandedPath = fullPath(candidate);
+        if (isFileExecutable(expandedPath))
+            return expandedPath;
+    }
+
+    return {};
+}
+
+QString clangTidyExecutable()
+{
+    const QString fromSettings = ClangToolsSettings::instance()->clangTidyExecutable();
+    if (!fromSettings.isEmpty())
+        return fullPath(fromSettings);
+
+    return findValidExecutable({
+        shippedClangTidyExecutable(),
+        Constants::CLANG_TIDY_EXECUTABLE_NAME,
+    });
+}
+
+QString clazyStandaloneExecutable()
+{
+    const QString fromSettings = ClangToolsSettings::instance()->clazyStandaloneExecutable();
+    if (!fromSettings.isEmpty())
+        return fullPath(fromSettings);
+
+    return findValidExecutable({
+        shippedClazyStandaloneExecutable(),
+        qEnvironmentVariable("QTC_USE_CLAZY_STANDALONE_PATH"),
+        Constants::CLAZY_STANDALONE_EXECUTABLE_NAME,
+    });
+}
+
 } // namespace Internal
 } // namespace ClangTools
diff --git a/src/plugins/clangtools/clangtoolsutils.h b/src/plugins/clangtools/clangtoolsutils.h
index 05acb953c5..a7ae9620de 100644
--- a/src/plugins/clangtools/clangtoolsutils.h
+++ b/src/plugins/clangtools/clangtoolsutils.h
@@ -44,5 +44,13 @@ QString createFullLocationString(const Debugger::DiagnosticLocation &location);
 QString hintAboutBuildBeforeAnalysis();
 void showHintAboutBuildBeforeAnalysis();
 
+bool isFileExecutable(const QString &filePath);
+
+QString shippedClazyStandaloneExecutable();
+QString clazyStandaloneExecutable();
+
+QString shippedClangTidyExecutable();
+QString clangTidyExecutable();
+
 } // namespace Internal
 } // namespace ClangTools
diff --git a/src/plugins/clangtools/settingswidget.cpp b/src/plugins/clangtools/settingswidget.cpp
index 08bd297897..5c570a7e97 100644
--- a/src/plugins/clangtools/settingswidget.cpp
+++ b/src/plugins/clangtools/settingswidget.cpp
@@ -28,8 +28,11 @@
 #include "ui_basicsettingswidget.h"
 #include "ui_settingswidget.h"
 
+#include "clangtoolsconstants.h"
 #include "clangtoolsutils.h"
 
+#include <coreplugin/icore.h>
+
 #include <cpptools/clangdiagnosticconfigswidget.h>
 #include <cpptools/cppcodemodelsettings.h>
 #include <cpptools/cpptoolsreuse.h>
@@ -37,18 +40,83 @@
 #include <QDir>
 #include <QThread>
 
+#include <memory>
+
 namespace ClangTools {
 namespace Internal {
 
-SettingsWidget::SettingsWidget(
-        ClangToolsSettings *settings,
-        QWidget *parent)
+static void setupPathChooser(Utils::PathChooser *const chooser,
+                             const QString &promptDiaglogTitle,
+                             const QString &placeHolderText,
+                             const QString &pathFromSettings,
+                             const QString &historyCompleterId,
+                             std::function<void(const QString &path)> savePath)
+{
+    chooser->setPromptDialogTitle(promptDiaglogTitle);
+    chooser->lineEdit()->setPlaceholderText(placeHolderText);
+    chooser->setPath(pathFromSettings);
+    chooser->setExpectedKind(Utils::PathChooser::ExistingCommand);
+    chooser->setHistoryCompleter(historyCompleterId);
+    QObject::connect(chooser, &Utils::PathChooser::rawPathChanged, savePath),
+    chooser->setValidationFunction([chooser](Utils::FancyLineEdit *edit, QString *errorMessage) {
+        const QString currentFilePath = chooser->fileName().toString();
+        Utils::PathChooser pc;
+        Utils::PathChooser *helperPathChooser;
+        if (currentFilePath.isEmpty()) {
+            pc.setExpectedKind(chooser->expectedKind());
+            pc.setPath(edit->placeholderText());
+            helperPathChooser = &pc;
+        } else {
+            helperPathChooser = chooser;
+        }
+
+        return chooser->defaultValidationFunction()(helperPathChooser->lineEdit(), errorMessage);
+    });
+}
+
+SettingsWidget::SettingsWidget(ClangToolsSettings *settings, QWidget *parent)
     : QWidget(parent)
     , m_ui(new Ui::SettingsWidget)
     , m_settings(settings)
 {
     m_ui->setupUi(this);
 
+    //
+    // Group box "Executables"
+    //
+
+    QString placeHolderText = shippedClangTidyExecutable();
+    QString path = settings->clangTidyExecutable();
+    if (path.isEmpty() && placeHolderText.isEmpty())
+        path = Constants::CLANG_TIDY_EXECUTABLE_NAME;
+    setupPathChooser(m_ui->clangTidyPathChooser,
+                     tr("Clang-Tidy Executable"),
+                     placeHolderText,
+                     path,
+                     "ClangTools.ClangTidyExecutable.History",
+                     [settings](const QString &path) { settings->setClangTidyExecutable(path); });
+
+    if (qEnvironmentVariable("QTC_USE_CLAZY_STANDALONE_PATH").isEmpty()) {
+        m_ui->clazyStandalonePathChooser->setVisible(false);
+        m_ui->clazyStandaloneLabel->setVisible(false);
+    } else {
+        placeHolderText = shippedClazyStandaloneExecutable();
+        path = settings->clazyStandaloneExecutable();
+        if (path.isEmpty() && placeHolderText.isEmpty())
+            path = Constants::CLAZY_STANDALONE_EXECUTABLE_NAME;
+        setupPathChooser(m_ui->clazyStandalonePathChooser,
+                         tr("Clazy Executable"),
+                         placeHolderText,
+                         path,
+                         "ClangTools.ClazyStandaloneExecutable.History",
+                         [settings](const QString &path) {
+                             settings->setClazyStandaloneExecutable(path);
+                         });
+    }
+
+    //
+    // Group box "Run Options"
+    //
     m_ui->simultaneousProccessesSpinBox->setValue(settings->savedSimultaneousProcesses());
     m_ui->simultaneousProccessesSpinBox->setMinimum(1);
     m_ui->simultaneousProccessesSpinBox->setMaximum(QThread::idealThreadCount());
diff --git a/src/plugins/clangtools/settingswidget.ui b/src/plugins/clangtools/settingswidget.ui
index b6b990aec8..e34079df35 100644
--- a/src/plugins/clangtools/settingswidget.ui
+++ b/src/plugins/clangtools/settingswidget.ui
@@ -15,9 +15,38 @@
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>
+    <widget class="QGroupBox" name="groupBox_2">
+     <property name="title">
+      <string>Executables</string>
+     </property>
+     <layout class="QFormLayout" name="formLayout">
+      <item row="0" column="0">
+       <widget class="QLabel" name="label">
+        <property name="text">
+         <string>Clang-Tidy:</string>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="1">
+       <widget class="Utils::PathChooser" name="clangTidyPathChooser" native="true"/>
+      </item>
+      <item row="1" column="0">
+       <widget class="QLabel" name="clazyStandaloneLabel">
+        <property name="text">
+         <string>Clazy-Standalone:</string>
+        </property>
+       </widget>
+      </item>
+      <item row="1" column="1">
+       <widget class="Utils::PathChooser" name="clazyStandalonePathChooser" native="true"/>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item>
     <widget class="QGroupBox" name="groupBox">
      <property name="title">
-      <string>General</string>
+      <string>Run Options</string>
      </property>
      <layout class="QVBoxLayout" name="verticalLayout_2">
       <item>
@@ -81,6 +110,12 @@
    <extends>QWidget</extends>
    <header>clangtools/basicsettingswidget.h</header>
   </customwidget>
+  <customwidget>
+   <class>Utils::PathChooser</class>
+   <extends>QWidget</extends>
+   <header location="global">utils/pathchooser.h</header>
+   <container>1</container>
+  </customwidget>
  </customwidgets>
  <resources/>
  <connections/>