shiboken6: Introduce a test mode for the code model

Add a flag that causes the AbstractMetaBuilder to not clear the
code model after a run for testing purposes.
As drive-by, clear out the code model scope, fully releasing
the code model after building.

Task-number: PYSIDE-1691
Change-Id: I883805f0ee1866ff8864811d9e29d17b181096bd
Reviewed-by: Christian Tismer <tismer@stackless.com>
(cherry picked from commit 29d41de05abcfc1dbe3eb2125ab518655aecb326)

3 files changed, 14 insertions, 3 deletions

diff --git a/sources/shiboken6/ApiExtractor/abstractmetabuilder.cpp b/sources/shiboken6/ApiExtractor/abstractmetabuilder.cpp
index e4527c518..b46b60fee 100644
--- a/sources/shiboken6/ApiExtractor/abstractmetabuilder.cpp
+++ b/sources/shiboken6/ApiExtractor/abstractmetabuilder.cpp
@@ -74,6 +74,7 @@ static void fixArgumentIndexes(AbstractMetaArgumentList *list)
 }
 
 bool AbstractMetaBuilderPrivate::m_useGlobalHeader = false;
+bool AbstractMetaBuilderPrivate::m_codeModelTestMode = false;
 
 AbstractMetaBuilderPrivate::AbstractMetaBuilderPrivate() :
     m_logDirectory(QLatin1String(".") + QDir::separator())
@@ -645,9 +646,12 @@ void AbstractMetaBuilderPrivate::traverseDom(const FileModelItem &dom)
             throw Exception(errorMessage);
     }
 
-    m_itemToClass.clear();
-    m_classToItem.clear();
-    m_typeSystemTypeDefs.clear();
+    if (!m_codeModelTestMode) {
+        m_itemToClass.clear();
+        m_classToItem.clear();
+        m_typeSystemTypeDefs.clear();
+        m_scopes.clear();
+    }
 
     ReportHandler::endProgress();
 }
@@ -2528,6 +2532,11 @@ QString AbstractMetaBuilder::fixEnumDefault(const AbstractMetaType &type,
     return d->fixEnumDefault(type, expr);
 }
 
+void AbstractMetaBuilder::setCodeModelTestMode(bool b)
+{
+    AbstractMetaBuilderPrivate::m_codeModelTestMode = b;
+}
+
 // see TestResolveType::testFixDefaultArguments()
 QString AbstractMetaBuilderPrivate::fixDefaultValue(QString expr, const AbstractMetaType &type,
                                                     const AbstractMetaClass *implementingClass) const
diff --git a/sources/shiboken6/ApiExtractor/abstractmetabuilder.h b/sources/shiboken6/ApiExtractor/abstractmetabuilder.h
index a49b9139c..c3e427965 100644
--- a/sources/shiboken6/ApiExtractor/abstractmetabuilder.h
+++ b/sources/shiboken6/ApiExtractor/abstractmetabuilder.h
@@ -117,6 +117,7 @@ public:
                             const AbstractMetaClass *) const;
     QString fixEnumDefault(const AbstractMetaType &type, const QString &expr) const;
 
+    static void setCodeModelTestMode(bool b);
 
 #ifndef QT_NO_DEBUG_STREAM
     void formatDebug(QDebug &d) const;
diff --git a/sources/shiboken6/ApiExtractor/abstractmetabuilder_p.h b/sources/shiboken6/ApiExtractor/abstractmetabuilder_p.h
index 06203ba5a..cb835e201 100644
--- a/sources/shiboken6/ApiExtractor/abstractmetabuilder_p.h
+++ b/sources/shiboken6/ApiExtractor/abstractmetabuilder_p.h
@@ -220,6 +220,7 @@ public:
     QList<TypeClassEntry> m_typeSystemTypeDefs; // look up metatype->class for type system typedefs
     bool m_skipDeprecated = false;
     static bool m_useGlobalHeader;
+    static bool m_codeModelTestMode;
 };
 
 #endif // ABSTRACTMETBUILDER_P_H