Nasal/CppBind: Difference between revisions

Nasal/CppBind (view source)

84 bytes added , 13 November 2013

m

clean up example

20,741

edits

@@ Line 18: / Line 18: @@
 struct Test {
   int x,y,z;
+ void hello() {
+  std::cout << "Hello World from CppBind!\n";
+ }
 };
@@ Line 23: / Line 26: @@
 typedef boost::shared_ptr<Test> Test_ptr;
 typedef nasal::Ghost< Test_ptr > NasalTest;
+// next, two helper functions that tell cppbind how to
+// convert our objects between C++  <-> Nasal
+naRef to_nasal_helper(naContext c, Test *src)
+  {
+    NasalTest_ptr ptr(src);
+    return NasalTest::create(c, ptr ); //
+  }
+Test*
+from_nasal_helper(naContext c, naRef ref, const Test*)
+  {
+      NasalTest::create(c, ref); // create a new Nasal Ghost
+  }
 // add this to FGNasalSys::init():
@@ Line 29: / Line 49: @@
   initNasalTest(_globals, _context);
 */
-// This is a helper, used by the to_helper() function
-// which turns the pointers into a Nasal data structure
-// so that you can return C++ classes to Nasal
-naRef to_nasal_helper(naContext c, const Test& t)
-  {
-    nasal::Hash hash(c);
-    hash.set("x", t.x );
-    hash.set("y", t.y );
-    hash.set("z", t.z );
-    return hash.get_naRef();
-  }
 naRef initNasalTest(naRef globals, naContext c)