Add unignore for rvalue ref-qualifiers

Use std::move on this pointer as the default approach to supporting
rvalue ref-qualifiers if a user really wants to wrap.

std::move requires <memory> headers so add swigfragments.swg for all
languages to use common fragments. Just header file fragments for now.

Examples/test-suite/common.mk

@@ -562,6 +562,7 @@ CPP11_TEST_CASES += \
 	cpp11_null_pointer_constant \
 	cpp11_raw_string_literals \
 	cpp11_ref_qualifiers \
+	cpp11_ref_qualifiers_rvalue_unignore \
 	cpp11_result_of \
 	cpp11_rvalue_reference \
 	cpp11_rvalue_reference2 \

Examples/test-suite/cpp11_ref_qualifiers_rvalue_unignore.i

@@ -0,0 +1,15 @@
+%module cpp11_ref_qualifiers_rvalue_unignore
+
+// This is a minimal test that does not include any C++ headers to make sure the required
+// <memory> header is generated from a fragment for the generated std::move call
+
+// m1 and m2 are ignored by default, unignore them
+%feature("ignore", "0") RefQualifier::m1() &&;
+%feature("ignore", "0") RefQualifier::m2() const &&;
+
+%inline %{
+struct RefQualifier {
+  void m1() && {}
+  void m2() const && {}
+};
+%}

Examples/test-suite/errors/cpp_refqualifier.i

@@ -18,5 +18,11 @@ public:
 
   void h_ignored() &&;
   void i_ignored() &&;
-  void j_ignored() const &&;
+  void i_ignored() &&;
+};
+
+%feature("ignore", "0") Unignore::k_unignored() const &&;
+
+struct Unignore {
+  void k_unignored() const &&;
 };

Examples/test-suite/java/cpp11_ref_qualifiers_rvalue_unignore_runme.java

@@ -0,0 +1,20 @@
+
+import cpp11_ref_qualifiers_rvalue_unignore.*;
+
+public class cpp11_ref_qualifiers_rvalue_unignore_runme {
+
+  static {
+    try {
+      System.loadLibrary("cpp11_ref_qualifiers_rvalue_unignore");
+    } 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[]) {
+    new RefQualifier().m1();
+    new RefQualifier().m2();
+  }
+}
+

Examples/test-suite/python/cpp11_ref_qualifiers_rvalue_unignore_runme.py

@@ -0,0 +1,4 @@
+import cpp11_ref_qualifiers_rvalue_unignore
+
+cpp11_ref_qualifiers_rvalue_unignore.RefQualifier().m1()
+cpp11_ref_qualifiers_rvalue_unignore.RefQualifier().m2()

Lib/swig.swg

@@ -309,11 +309,13 @@ static int NAME(TYPE x) {
 
 %define %$classname      %$ismember,"match$parentNode$name"  %enddef
 %define %$isnested       "match$nested"="1"  %enddef
+
 /* -----------------------------------------------------------------------------
- * Include all the warnings labels and macros 
+ * Common includes for warning labels, macros, fragments etc
  * ----------------------------------------------------------------------------- */
 
 %include <swigwarnings.swg>
+%include <swigfragments.swg>
 
 /* -----------------------------------------------------------------------------
  * Overloading support

Lib/swigfragments.swg

@@ -0,0 +1,86 @@
+/* -----------------------------------------------------------------------------
+ * swigfragments.swg
+ *
+ * Common fragments
+ * ----------------------------------------------------------------------------- */
+
+/* -----------------------------------------------------------------------------
+ * Fragments for C header files
+ * ----------------------------------------------------------------------------- */
+
+%fragment("<float.h>", "header") %{
+#include <float.h>
+%}
+
+/* Default compiler options for gcc allow long_long but not LLONG_MAX. 
+ * Define SWIG_NO_LLONG_MAX if this added limits support is not wanted. */
+%fragment("<limits.h>", "header") %{
+#include <limits.h>
+#if !defined(SWIG_NO_LLONG_MAX)
+# if !defined(LLONG_MAX) && defined(__GNUC__) && defined (__LONG_LONG_MAX__)
+#   define LLONG_MAX __LONG_LONG_MAX__
+#   define LLONG_MIN (-LLONG_MAX - 1LL)
+#   define ULLONG_MAX (LLONG_MAX * 2ULL + 1ULL)
+# endif
+#endif
+%}
+
+%fragment("<math.h>", "header") %{
+#include <math.h>
+%}
+
+%fragment("<stddef.h>", "header") %{
+#include <stddef.h>
+%}
+
+%fragment("<stdio.h>", "header") %{
+#include <stdio.h>
+#if defined(_MSC_VER) || defined(__BORLANDC__) || defined(_WATCOM)
+# ifndef snprintf
+#  define snprintf _snprintf
+# endif
+#endif
+%}
+
+%fragment("<stdlib.h>", "header") %{
+#include <stdlib.h>
+#ifdef _MSC_VER
+# ifndef strtoull
+#  define strtoull _strtoui64
+# endif
+# ifndef strtoll
+#  define strtoll _strtoi64
+# endif
+#endif
+%}
+
+%fragment("<wchar.h>", "header") %{
+#include <wchar.h>
+#include <limits.h>
+#ifndef WCHAR_MIN
+#  define WCHAR_MIN 0
+#endif
+#ifndef WCHAR_MAX
+#  define WCHAR_MAX 65535
+#endif
+%}
+
+/* -----------------------------------------------------------------------------
+ * Fragments for C++ header files
+ * ----------------------------------------------------------------------------- */
+
+%fragment("<algorithm>", "header") %{
+#include <algorithm>
+%}
+
+%fragment("<stdexcept>", "header") %{
+#include <stdexcept>
+%}
+
+%fragment("<string>", "header") %{
+#include <string>
+%}
+
+%fragment("<memory>", "header") %{
+#include <memory>
+%}

Lib/typemaps/fragments.swg

@@ -96,75 +96,6 @@
  * common fragments 
  * ------------------------------------------------------------ */
 
-/* Default compiler options for gcc allow long_long but not LLONG_MAX. 
- * Define SWIG_NO_LLONG_MAX if this added limits support is not wanted. */
-%fragment("<limits.h>","header") %{
-#include <limits.h>
-#if !defined(SWIG_NO_LLONG_MAX)
-# if !defined(LLONG_MAX) && defined(__GNUC__) && defined (__LONG_LONG_MAX__)
-#   define LLONG_MAX __LONG_LONG_MAX__
-#   define LLONG_MIN (-LLONG_MAX - 1LL)
-#   define ULLONG_MAX (LLONG_MAX * 2ULL + 1ULL)
-# endif
-#endif
-%}
-
-%fragment("<math.h>","header") %{
-#include <math.h>
-%}
-
-%fragment("<wchar.h>","header") %{
-#include <wchar.h>
-#include <limits.h>
-#ifndef WCHAR_MIN
-#  define WCHAR_MIN 0
-#endif
-#ifndef WCHAR_MAX
-#  define WCHAR_MAX 65535
-#endif
-%}
-
-%fragment("<float.h>","header") %{
-#include <float.h>
-%}
-
-%fragment("<stdio.h>","header") %{
-#include <stdio.h>
-#if defined(_MSC_VER) || defined(__BORLANDC__) || defined(_WATCOM)
-# ifndef snprintf
-#  define snprintf _snprintf
-# endif
-#endif
-%}
-
-%fragment("<stdlib.h>","header") %{
-#include <stdlib.h>
-#ifdef _MSC_VER
-# ifndef strtoull
-#  define strtoull _strtoui64
-# endif
-# ifndef strtoll
-#  define strtoll _strtoi64
-# endif
-#endif
-%}
-
-%fragment("<stddef.h>", "header") %{
-#include <stddef.h>
-%}
-
-%fragment("<string>", "header") %{
-#include <string>
-%}
-
-%fragment("<stdexcept>", "header") %{
-#include <stdexcept>
-%}
-
-%fragment("<algorithm>", "header") %{
-#include <algorithm>
-%}
-
 %fragment("SWIG_isfinite","header",fragment="<math.h>,<float.h>") %{
 /* Getting isfinite working pre C99 across multiple platforms is non-trivial. Users can provide SWIG_isfinite on older platforms. */
 #ifndef SWIG_isfinite

Source/CParse/parser.y

@@ -485,9 +485,10 @@ static void add_symbols(Node *n) {
         SetFlag(n,"deleted");
         SetFlag(n,"feature:ignore");
       }
-      {
-	String *refqualifier = Getattr(n, "refqualifier");
-	if (SwigType_isrvalue_reference(refqualifier) && Strcmp(symname, "$ignore") != 0) {
+      if (SwigType_isrvalue_reference(Getattr(n, "refqualifier"))) {
+	/* Ignore rvalue ref-qualifiers by default
+	 * Use Getattr instead of GetFlag to handle explicit ignore and explicit not ignore */
+	if (!(Getattr(n, "feature:ignore") || Strncmp(symname, "$ignore", 7) == 0)) {
 	  SWIG_WARN_NODE_BEGIN(n);
 	  Swig_warning(WARN_TYPE_RVALUE_REF_QUALIFIER_IGNORED, Getfile(n), Getline(n),
 	      "Method with rvalue ref-qualifier %s ignored.\n", Swig_name_decl(n));

Source/Swig/cwrap.c

@@ -1024,6 +1024,15 @@ int Swig_MethodToFunction(Node *n, const_String_or_char_ptr nspace, String *clas
       }
     }
 
+    if (!self && SwigType_isrvalue_reference(Getattr(n, "refqualifier"))) {
+      String *memory_header = NewString("<memory>");
+      Setfile(memory_header, Getfile(n));
+      Setline(memory_header, Getline(n));
+      Swig_fragment_emit(memory_header);
+      self = NewString("std::move(*this).");
+      Delete(memory_header);
+    }
+
     call = Swig_cmethod_call(explicitcall_name ? explicitcall_name : name, p, self, explicit_qualifier, director_type);
     cres = Swig_cresult(Getattr(n, "type"), Swig_cresult_name(), call);