The great merge

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@4141 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/test-suite/dynamic_cast.i

@@ -0,0 +1,65 @@
+/* File : example.i */
+%module dynamic_cast
+
+#ifndef SWIGJAVA
+%apply SWIGTYPE *DYNAMIC { Foo * };
+#endif
+
+%inline %{
+
+class Foo {
+public:
+   virtual Foo *blah() {
+       return this;
+   }
+};
+%}
+
+#ifdef SWIGJAVA
+%typemap(out) Foo *blah {
+    Bar *downcast = dynamic_cast<Bar *>($1);
+    *(Bar **)&$result = downcast;
+}
+
+%typemap(javaout) Foo * {
+    return new Bar($jnicall, $owner);
+  }
+#endif
+
+%inline %{
+
+class Bar : public Foo {
+public:
+   virtual Foo *blah() {
+       return (Foo *) this;
+   }
+   virtual char * test() {
+       return (char *) "Bar::test";
+   }
+};
+
+char *do_test(Bar *b) {
+   return b->test();
+}
+%}
+
+#ifndef SWIGJAVA
+// A general purpose function for dynamic casting of a Foo *
+%{
+static swig_type_info *
+Foo_dynamic(void **ptr) {
+   Bar *b;
+   b = dynamic_cast<Bar *>((Foo *) *ptr);
+   if (b) {
+      *ptr = (void *) b;
+      return SWIGTYPE_p_Bar;
+   }
+   return 0;
+}
+%}
+
+// Register the above casting function
+DYNAMIC_CAST(SWIGTYPE_p_Foo, Foo_dynamic);
+
+#endif
+