CppEditor: Catch another project pointer access from a thread

Amends 33108795d6.

Fixes: QTCREATORBUG-27044
Change-Id: I53d716355b0784841fd8d965c8af14fe321c33de
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/cppeditor/baseeditordocumentparser.cpp

@@ -120,7 +120,7 @@ BaseEditorDocumentParser::Ptr BaseEditorDocumentParser::get(const QString &fileP
 ProjectPartInfo BaseEditorDocumentParser::determineProjectPart(const QString &filePath,
         const QString &preferredProjectPartId,
         const ProjectPartInfo &currentProjectPartInfo,
-        const ProjectExplorer::Project *activeProject,
+        const Utils::FilePath &activeProject,
         Utils::Language languagePreference,
         bool projectsUpdated)
 {

src/plugins/cppeditor/baseeditordocumentparser.h

@@ -30,6 +30,8 @@
 #include "cppworkingcopy.h"
 #include "projectpart.h"
 
+#include <projectexplorer/project.h>
+
 #include <QFutureInterface>
 #include <QObject>
 #include <QMutex>
@@ -65,14 +67,14 @@ public:
                      Utils::Language languagePreference,
                      bool projectsUpdated)
             : workingCopy(workingCopy)
-            , activeProject(activeProject)
+            , activeProject(activeProject ? activeProject->projectFilePath() : Utils::FilePath())
             , languagePreference(languagePreference)
             , projectsUpdated(projectsUpdated)
         {
         }
 
         WorkingCopy workingCopy;
-        const ProjectExplorer::Project *activeProject = nullptr;
+        const Utils::FilePath activeProject;
         Utils::Language languagePreference = Utils::Language::Cxx;
         bool projectsUpdated = false;
     };
@@ -104,7 +106,7 @@ protected:
     static ProjectPartInfo determineProjectPart(const QString &filePath,
             const QString &preferredProjectPartId,
             const ProjectPartInfo &currentProjectPartInfo,
-            const ProjectExplorer::Project *activeProject,
+            const Utils::FilePath &activeProject,
             Utils::Language languagePreference,
             bool projectsUpdated);
 

src/plugins/cppeditor/cppprojectpartchooser.cpp

@@ -46,7 +46,7 @@ public:
 
     ProjectPartPrioritizer(const QList<ProjectPart::ConstPtr> &projectParts,
                            const QString &preferredProjectPartId,
-                           const ProjectExplorer::Project *activeProject,
+                           const Utils::FilePath &activeProject,
                            Language languagePreference,
                            bool areProjectPartsFromDependencies)
         : m_preferredProjectPartId(preferredProjectPartId)
@@ -124,7 +124,7 @@ private:
 
 private:
     const QString m_preferredProjectPartId;
-    const ProjectExplorer::Project *m_activeProject = nullptr;
+    const Utils::FilePath m_activeProject;
     Language m_languagePreference = Language::Cxx;
 
     // Results
@@ -134,7 +134,7 @@ private:
 ProjectPartInfo ProjectPartChooser::choose(const QString &filePath,
         const ProjectPartInfo &currentProjectPartInfo,
         const QString &preferredProjectPartId,
-        const ProjectExplorer::Project *activeProject,
+        const Utils::FilePath &activeProject,
         Language languagePreference,
         bool projectsUpdated) const
 {

src/plugins/cppeditor/cppprojectpartchooser.h

@@ -50,7 +50,7 @@ public:
     ProjectPartInfo choose(const QString &filePath,
             const ProjectPartInfo &currentProjectPartInfo,
             const QString &preferredProjectPartId,
-            const ProjectExplorer::Project *activeProject,
+            const Utils::FilePath &activeProject,
             Utils::Language languagePreference,
             bool projectsUpdated) const;
 

src/plugins/cppeditor/projectinfo_test.cpp

@@ -60,8 +60,11 @@ public:
 
     const ProjectPartInfo choose()
     {
+        const Project * const project = projectMap.value(activeProject).get();
+        const Utils::FilePath projectFilePath = project ? project->projectFilePath()
+                                                        : Utils::FilePath();
         return chooser.choose(filePath, currentProjectPartInfo, preferredProjectPartId,
-                              projectMap.value(activeProject).get(),
+                              projectFilePath,
                               languagePreference, projectsChanged);
     }
 

src/plugins/cppeditor/projectpart.cpp

@@ -57,7 +57,12 @@ QString ProjectPart::projectFileLocation() const
 
 bool ProjectPart::belongsToProject(const ProjectExplorer::Project *project) const
 {
-    return project ? topLevelProject == project->projectFilePath() : !hasProject();
+    return belongsToProject(project ? project->projectFilePath() : Utils::FilePath());
+}
+
+bool ProjectPart::belongsToProject(const Utils::FilePath &project) const
+{
+    return topLevelProject == project;
 }
 
 QByteArray ProjectPart::readProjectConfigFile(const QString &projectConfigFile)

src/plugins/cppeditor/projectpart.h

@@ -75,6 +75,7 @@ public:
     QString projectFileLocation() const;
     bool hasProject() const { return !topLevelProject.isEmpty(); }
     bool belongsToProject(const ProjectExplorer::Project *project) const;
+    bool belongsToProject(const Utils::FilePath &project) const;
 
     static QByteArray readProjectConfigFile(const QString &projectConfigFile);