Add support for conversion operators with ref-qualifiers

Examples/test-suite/cpp11_ref_qualifiers.i

@@ -74,3 +74,18 @@ struct Renames {
   string S3(int i) const & { return string(); }
 };
 %}
+
+// Conversion operators
+%rename(StringConvertCopy) operator string() &;
+%rename(StringConvertMove) operator string() &&;
+%feature("ignore", "0") operator string() &&; // unignore as it is ignored by default
+
+%inline %{
+struct ConversionOperators {
+  virtual operator string() & { return string(); }
+  virtual operator string() && { return std::move(string()); }
+};
+struct ConversionOperators2 {
+  virtual operator string() && { return std::move(string()); }
+};
+%}

Examples/test-suite/java/cpp11_ref_qualifiers_runme.java

@@ -42,6 +42,15 @@ public class cpp11_ref_qualifiers_runme {
     r.SS1(0);
     r.SS2(0);
     r.SS3(0);
+
+    // Conversion operators
+    String s = null;
+    ConversionOperators co = new ConversionOperators();
+    s = co.StringConvertCopy();
+    s = co.StringConvertMove();
+
+    ConversionOperators2 co2 = new ConversionOperators2();
+    s = co2.StringConvertMove();
   }
 }
 

Examples/test-suite/python/cpp11_ref_qualifiers_runme.py

@@ -35,3 +35,11 @@ r.RR3()
 r.SS1(0)
 r.SS2(0)
 r.SS3(0)
+
+# Conversion operators
+co = cpp11_ref_qualifiers.ConversionOperators()
+s = co.StringConvertCopy()
+s = co.StringConvertMove()
+
+co2 = cpp11_ref_qualifiers.ConversionOperators2()
+s = co2.StringConvertMove()