Ensure that project configuration did not change

Otherwise we might try to analyze invalid or vanished files.

Change-Id: I387dfb127618f2db21a538b07e1c152dbd026ca6
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

7 files changed, 81 insertions, 23 deletions

diff --git a/plugins/clangstaticanalyzer/clangstaticanalyzerplugin.cpp b/plugins/clangstaticanalyzer/clangstaticanalyzerplugin.cpp
index 0a321d64e8..e635305b97 100644
--- a/plugins/clangstaticanalyzer/clangstaticanalyzerplugin.cpp
+++ b/plugins/clangstaticanalyzer/clangstaticanalyzerplugin.cpp
@@ -121,10 +121,9 @@ bool ClangStaticAnalyzerPlugin::initializeEnterpriseFeatures(const QStringList &
     Q_UNUSED(arguments);
     Q_UNUSED(errorString);
 
-    addAutoReleasedObject(new ClangStaticAnalyzerOptionsPage);
-    addAutoReleasedObject(new ClangStaticAnalyzerRunControlFactory);
-
     m_analyzerTool = new ClangStaticAnalyzerTool(this);
+    addAutoReleasedObject(new ClangStaticAnalyzerRunControlFactory(m_analyzerTool));
+    addAutoReleasedObject(new ClangStaticAnalyzerOptionsPage);
 
     const QString toolTip = tr("Clang Static Analyzer uses the analyzer from the clang project "
                                "to find bugs.");
diff --git a/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrol.cpp b/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrol.cpp
index ba37140795..17a63f3a20 100644
--- a/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrol.cpp
+++ b/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrol.cpp
@@ -49,9 +49,11 @@ namespace ClangStaticAnalyzer {
 namespace Internal {
 
 ClangStaticAnalyzerRunControl::ClangStaticAnalyzerRunControl(
-        const Analyzer::AnalyzerStartParameters &startParams,
-        ProjectExplorer::RunConfiguration *runConfiguration)
+            const Analyzer::AnalyzerStartParameters &startParams,
+            ProjectExplorer::RunConfiguration *runConfiguration,
+            const ProjectInfo &projectInfo)
     : AnalyzerRunControl(startParams, runConfiguration)
+    , m_projectInfo(projectInfo)
     , m_initialFilesToProcessSize(0)
     , m_filesAnalyzed(0)
     , m_filesNotAnalyzed(0)
@@ -145,10 +147,9 @@ static QList<ClangStaticAnalyzerRunControl::AnalyzeUnit> unitsToAnalyzeFromProje
     return unitsToAnalyze;
 }
 
-static QList<ClangStaticAnalyzerRunControl::AnalyzeUnit> unitsToAnalyze(Project *project)
+static QList<ClangStaticAnalyzerRunControl::AnalyzeUnit> unitsToAnalyze(
+            const CppTools::ProjectInfo &projectInfo)
 {
-    QTC_ASSERT(project, return QList<ClangStaticAnalyzerRunControl::AnalyzeUnit>());
-    ProjectInfo projectInfo = CppModelManager::instance()->projectInfo(project);
     QTC_ASSERT(projectInfo.isValid(), return QList<ClangStaticAnalyzerRunControl::AnalyzeUnit>());
 
     const ProjectInfo::CompilerCallData compilerCallData = projectInfo.compilerCallData();
@@ -161,14 +162,8 @@ bool ClangStaticAnalyzerRunControl::startEngine()
 {
     emit starting(this);
 
-    RunConfiguration *runConfig = runConfiguration();
-    QTC_ASSERT(runConfig, emit finished(); return false);
-    Target *target = runConfig->target();
-    QTC_ASSERT(target, emit finished(); return false);
-    Project *project = target->project();
-    QTC_ASSERT(project, emit finished(); return false);
-
-    const QString projectFile = project->projectFilePath().toString();
+    QTC_ASSERT(m_projectInfo.isValid(), emit finished(); return false);
+    const QString projectFile = m_projectInfo.project()->projectFilePath().toString();
     appendMessage(tr("Running Clang Static Analyzer on %1").arg(projectFile) + QLatin1Char('\n'),
                         Utils::NormalMessageFormat);
 
@@ -196,7 +191,7 @@ bool ClangStaticAnalyzerRunControl::startEngine()
     m_clangLogFileDir = temporaryDir.path();
 
     // Collect files
-    const QList<AnalyzeUnit> filesToProcess = unitsToAnalyze(project);
+    const QList<AnalyzeUnit> filesToProcess = unitsToAnalyze(m_projectInfo);
     qCDebug(LOG) << "Files to process:";
     foreach (const AnalyzeUnit &fileConfig, filesToProcess)
         qCDebug(LOG) << fileConfig.file;
diff --git a/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrol.h b/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrol.h
index 8de898c23a..cc56f107f6 100644
--- a/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrol.h
+++ b/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrol.h
@@ -46,7 +46,8 @@ public:
 
 public:
     explicit ClangStaticAnalyzerRunControl(const Analyzer::AnalyzerStartParameters &startParams,
-                                           ProjectExplorer::RunConfiguration *runConfiguration);
+                                           ProjectExplorer::RunConfiguration *runConfiguration,
+                                           const CppTools::ProjectInfo &projectInfo);
 
     bool startEngine();
     void stopEngine();
@@ -66,6 +67,8 @@ private:
     void updateProgressValue();
 
 private:
+    const CppTools::ProjectInfo m_projectInfo;
+
     QString m_clangExecutable;
     QString m_clangLogFileDir;
     QFutureInterface<void> m_progress;
diff --git a/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrolfactory.cpp b/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrolfactory.cpp
index a8896b4565..df683464db 100644
--- a/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrolfactory.cpp
+++ b/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrolfactory.cpp
@@ -22,21 +22,31 @@
 #include <analyzerbase/analyzerruncontrol.h>
 #include <analyzerbase/analyzerstartparameters.h>
 
+#include <cpptools/cppmodelmanager.h>
+#include <cpptools/cppprojects.h>
+
 #include <projectexplorer/gcctoolchain.h>
 #include <projectexplorer/kit.h>
 #include <projectexplorer/kitinformation.h>
+#include <projectexplorer/session.h>
 #include <projectexplorer/target.h>
 #include <projectexplorer/toolchain.h>
 
+#include <utils/qtcassert.h>
+
 using namespace Analyzer;
 using namespace ProjectExplorer;
 
 namespace ClangStaticAnalyzer {
 namespace Internal {
 
-ClangStaticAnalyzerRunControlFactory::ClangStaticAnalyzerRunControlFactory(QObject *parent)
+ClangStaticAnalyzerRunControlFactory::ClangStaticAnalyzerRunControlFactory(
+        ClangStaticAnalyzerTool *tool,
+        QObject *parent)
     : IRunControlFactory(parent)
+    , m_tool(tool)
 {
+    QTC_CHECK(m_tool);
 }
 
 bool ClangStaticAnalyzerRunControlFactory::canRun(RunConfiguration *runConfiguration,
@@ -58,9 +68,30 @@ RunControl *ClangStaticAnalyzerRunControlFactory::create(RunConfiguration *runCo
                                                          RunMode runMode,
                                                          QString *errorMessage)
 {
-    Q_UNUSED(errorMessage);
     Q_UNUSED(runMode);
 
+    using namespace CppTools;
+    const ProjectInfo projectInfoAtAnalyzerStart = m_tool->projectInfo();
+    QTC_ASSERT(projectInfoAtAnalyzerStart.isValid(), return 0);
+
+    Project *project = SessionManager::startupProject();
+    QTC_ASSERT(project, return 0);
+    const ProjectInfo projectInfoNow = CppModelManager::instance()->projectInfo(project);
+
+    if (projectInfoNow.configurationOrFilesChanged(projectInfoAtAnalyzerStart)) {
+        // If it's more than a release/debug build configuration change, e.g.
+        // a version control checkout, files might be not valid C++ anymore
+        // or even gone, so better stop here.
+
+        m_tool->resetCursorAndProjectInfo();
+        if (errorMessage) {
+            *errorMessage = tr(
+                "The project configuration changed since the start of the Clang Static Analyzer. "
+                "Please re-run with current configuration.");
+        }
+        return 0;
+    }
+
     AnalyzerStartParameters sp;
     sp.runMode = runMode;
     sp.startMode = StartLocal;
diff --git a/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrolfactory.h b/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrolfactory.h
index ec3b2d8c9c..a325691972 100644
--- a/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrolfactory.h
+++ b/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrolfactory.h
@@ -19,6 +19,8 @@
 #ifndef CLANGSTATICANALYZERRUNCONTROLFACTORY_H
 #define CLANGSTATICANALYZERRUNCONTROLFACTORY_H
 
+#include "clangstaticanalyzertool.h"
+
 #include <projectexplorer/runconfiguration.h>
 
 namespace ClangStaticAnalyzer {
@@ -29,7 +31,8 @@ class ClangStaticAnalyzerRunControlFactory : public ProjectExplorer::IRunControl
     Q_OBJECT
 
 public:
-    explicit ClangStaticAnalyzerRunControlFactory(QObject *parent = 0);
+    explicit ClangStaticAnalyzerRunControlFactory(ClangStaticAnalyzerTool *tool,
+                                                  QObject *parent = 0);
 
     bool canRun(ProjectExplorer::RunConfiguration *runConfiguration,
                 ProjectExplorer::RunMode runMode) const;
@@ -37,6 +40,9 @@ public:
     ProjectExplorer::RunControl *create(ProjectExplorer::RunConfiguration *runConfiguration,
                                         ProjectExplorer::RunMode runMode,
                                         QString *errorMessage);
+
+private:
+    ClangStaticAnalyzerTool *m_tool;
 };
 
 } // namespace Internal
diff --git a/plugins/clangstaticanalyzer/clangstaticanalyzertool.cpp b/plugins/clangstaticanalyzer/clangstaticanalyzertool.cpp
index c2b663074e..591e8da4ce 100644
--- a/plugins/clangstaticanalyzer/clangstaticanalyzertool.cpp
+++ b/plugins/clangstaticanalyzer/clangstaticanalyzertool.cpp
@@ -25,6 +25,7 @@
 #include <analyzerbase/analyzermanager.h>
 #include <coreplugin/coreconstants.h>
 #include <coreplugin/icore.h>
+#include <cpptools/cppmodelmanager.h>
 #include <projectexplorer/buildconfiguration.h>
 #include <projectexplorer/projectexplorer.h>
 #include <projectexplorer/projectexplorerconstants.h>
@@ -133,7 +134,11 @@ AnalyzerRunControl *ClangStaticAnalyzerTool::createRunControl(
         const AnalyzerStartParameters &sp,
         ProjectExplorer::RunConfiguration *runConfiguration)
 {
-    ClangStaticAnalyzerRunControl *engine = new ClangStaticAnalyzerRunControl(sp, runConfiguration);
+    QTC_ASSERT(runConfiguration, return 0);
+    QTC_ASSERT(m_projectInfo.isValid(), return 0);
+
+    ClangStaticAnalyzerRunControl *engine = new ClangStaticAnalyzerRunControl(sp, runConfiguration,
+                                                                              m_projectInfo);
     connect(engine, &ClangStaticAnalyzerRunControl::starting,
             this, &ClangStaticAnalyzerTool::onEngineIsStarting);
     connect(engine, &ClangStaticAnalyzerRunControl::newDiagnosticsAvailable,
@@ -192,6 +197,18 @@ void ClangStaticAnalyzerTool::startTool(StartMode mode)
     Project *project = SessionManager::startupProject();
     QTC_ASSERT(project, return);
     ProjectExplorerPlugin::instance()->runProject(project, runMode());
+    m_projectInfo = CppTools::CppModelManager::instance()->projectInfo(project);
+}
+
+CppTools::ProjectInfo ClangStaticAnalyzerTool::projectInfo() const
+{
+    return m_projectInfo;
+}
+
+void ClangStaticAnalyzerTool::resetCursorAndProjectInfo()
+{
+    setBusyCursor(false);
+    m_projectInfo = CppTools::ProjectInfo();
 }
 
 void ClangStaticAnalyzerTool::onEngineIsStarting()
@@ -210,10 +227,12 @@ void ClangStaticAnalyzerTool::onEngineFinished()
     QTC_ASSERT(m_goBack, return);
     QTC_ASSERT(m_goNext, return);
     QTC_ASSERT(m_diagnosticModel, return);
+
+    resetCursorAndProjectInfo();
+
     const int issuesFound = m_diagnosticModel->rowCount();
     m_goBack->setEnabled(issuesFound > 1);
     m_goNext->setEnabled(issuesFound > 1);
-    setBusyCursor(false);
 
     AnalyzerManager::showStatusMessage(issuesFound > 0
       ? AnalyzerManager::tr("Clang Static Analyzer finished, %n issues were found.", 0, issuesFound)
diff --git a/plugins/clangstaticanalyzer/clangstaticanalyzertool.h b/plugins/clangstaticanalyzer/clangstaticanalyzertool.h
index 2cb1393a7a..f049740d89 100644
--- a/plugins/clangstaticanalyzer/clangstaticanalyzertool.h
+++ b/plugins/clangstaticanalyzer/clangstaticanalyzertool.h
@@ -20,6 +20,7 @@
 #define CLANGSTATICANALYZERTOOL_H
 
 #include <analyzerbase/ianalyzertool.h>
+#include <cpptools/cppprojects.h>
 
 namespace Analyzer { class DetailedErrorView; }
 
@@ -36,6 +37,8 @@ class ClangStaticAnalyzerTool : public Analyzer::IAnalyzerTool
 
 public:
     explicit ClangStaticAnalyzerTool(QObject *parent = 0);
+    CppTools::ProjectInfo projectInfo() const;
+    void resetCursorAndProjectInfo();
 
 private:
     QWidget *createWidgets();
@@ -50,6 +53,8 @@ private:
     void setBusyCursor(bool busy);
 
 private:
+    CppTools::ProjectInfo m_projectInfo;
+
     ClangStaticAnalyzerDiagnosticModel *m_diagnosticModel;
     Analyzer::DetailedErrorView *m_diagnosticView;