Extend the _FunctionModelItem function type enumeration by operator types and determine them by name or from clang. Split the bitwise operators into shift and other bitwise operators for stresm operator detection. Similarly, add operator type values to AbstractMetaFunction::FunctionType and replace the isOperator() checks accordingly. Remove the unused isOtherOperator() function. Rename AbstractMetaFunction::isNormal() to needsReturnType() for clarity. Rewrite the binary operator search in AbstractMetaBuilder by checks based on enumeration value and rewrite traverseOperatorFunction to return a bool so that shift operators are found when stream operator is not applicable. Rewrite the function query functions of AbstractMetaClass to also use the enumeration values. Pick-to: 6.0 Change-Id: I06cc2deefcd8a158f83c95513a7962de467f7f2a Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org> Reviewed-by: Christian Tismer <tismer@stackless.com>