C++11 ref-qualifier support added

Fixes #1059

Methods with rvalue ref-qualifiers are ignored by default as it is not
possible to have an rvalue temporary from the target language (which is
needed to call the rvalue ref-qualified method).
A warning 405 is shown mentioning the ignored rvalue ref-qualifier method
which can be seen with the -Wextra option.

  cpp_refqualifier.i:15: Warning 405: Method with rvalue ref-qualifier ignored h() const &&.

Usually rvalue and lvalue ref-qualifier overloaded methods are written - the
lvalue method will then be wrapped.

Examples/test-suite/common.mk

@@ -561,6 +561,7 @@ CPP11_TEST_CASES += \
 	cpp11_noexcept \
 	cpp11_null_pointer_constant \
 	cpp11_raw_string_literals \
+	cpp11_ref_qualifiers \
 	cpp11_result_of \
 	cpp11_rvalue_reference \
 	cpp11_rvalue_reference2 \

Examples/test-suite/cpp11_ref_qualifiers.i

@@ -0,0 +1,16 @@
+%module cpp11_ref_qualifiers
+
+%inline %{
+class Host {
+public:
+  void h1() & {}
+  void h2() const & {}
+  void h3() && {}
+  void h4() const && {}
+
+  void h() & {}
+  void h() const & {}
+  void h() && {}
+  void h() const && {}
+};
+%}

Examples/test-suite/errors/cpp_refqualifier.i

@@ -0,0 +1,18 @@
+%module cpp_refqualifier
+
+%ignore Host::h_ignored;
+
+class Host {
+public:
+  void h1() &;
+  void h2() const &;
+  void h3() &&;
+  void h4() const &&;
+
+  void h() &;
+  void h() const &;
+  void h() &&;
+  void h() const &&;
+
+  void h_ignored() &&;
+};

Examples/test-suite/errors/cpp_refqualifier.stderr

@@ -0,0 +1,6 @@
+cpp_refqualifier.i:9: Warning 405: Method with rvalue ref-qualifier ignored h3() &&.
+cpp_refqualifier.i:10: Warning 405: Method with rvalue ref-qualifier ignored h4() const &&.
+cpp_refqualifier.i:14: Warning 405: Method with rvalue ref-qualifier ignored h() &&.
+cpp_refqualifier.i:15: Warning 405: Method with rvalue ref-qualifier ignored h() const &&.
+cpp_refqualifier.i:13: Warning 512: Overloaded method Host::h() const & ignored,
+cpp_refqualifier.i:12: Warning 512: using non-const method Host::h() & instead.

Examples/test-suite/java/cpp11_ref_qualifiers_runme.java

@@ -0,0 +1,22 @@
+
+import cpp11_ref_qualifiers.*;
+
+public class cpp11_ref_qualifiers_runme {
+
+  static {
+    try {
+      System.loadLibrary("cpp11_ref_qualifiers");
+    } catch (UnsatisfiedLinkError e) {
+      System.err.println("Native code library failed to load. See the chapter on Dynamic Linking Problems in the SWIG Java documentation for help.\n" + e);
+      System.exit(1);
+    }
+  }
+
+  public static void main(String argv[]) {
+    Host h = new Host();
+    h.h1();
+    h.h2();
+    h.h();
+  }
+}
+

Examples/test-suite/python/cpp11_ref_qualifiers_runme.py

@@ -0,0 +1,6 @@
+import cpp11_ref_qualifiers
+
+h = cpp11_ref_qualifiers.Host()
+h.h1()
+h.h2()
+h.h()