shiboken6: Store AbstractMetaFunction using a QSharedPointer

Store the list functions (global / class member) as a
QList<QSharedPointer<const AbstractMetaFunction> instead of a raw
pointer list. This makes passing around function lists easier and
solves the memory leaks caused by mixing cloned and unmodified
functions while collecting the overload lists in the generators.

- Change the function signatures accordingly
- Add a qSharedPointerConstCast() for non-const access.
- Restructure the traversing of added functions
  in the AbstractMetaBuilder
- Remove some unused typedefs and functions unearthed by
  the change

Change-Id: I08a6c5243750e3eb3813bc3f7172899ad2b13e22
Reviewed-by: Christian Tismer <tismer@stackless.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/sources/shiboken6/ApiExtractor/tests/testresolvetype.cpp b/sources/shiboken6/ApiExtractor/tests/testresolvetype.cpp
index 2203f3648..4c2930234 100644
--- a/sources/shiboken6/ApiExtractor/tests/testresolvetype.cpp
+++ b/sources/shiboken6/ApiExtractor/tests/testresolvetype.cpp
@@ -58,7 +58,8 @@ void TestResolveType::testResolveReturnTypeFromParentScope()
     AbstractMetaClassList classes = builder->classes();
     const AbstractMetaClass *classD = AbstractMetaClass::findClass(classes, QLatin1String("A::D"));
     QVERIFY(classD);
-    const AbstractMetaFunction* meth = classD->findFunction(QLatin1String("method"));
+    const auto meth = classD->findFunction(QLatin1String("method"));
+    QVERIFY(!meth.isNull());
     QVERIFY(meth);
 }