[lua] Added a typemap DISOWN for SWIGTYPE* and SWIGTYPE[], and support for %delobject feature.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@10326 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/lua/owner/example.cxx

@@ -0,0 +1,67 @@
+/* File : example.c */
+
+#include "example.h"
+#define M_PI 3.14159265358979323846
+
+/* Move the shape to a new location */
+void Shape::move(double dx, double dy) {
+  x += dx;
+  y += dy;
+}
+
+int Shape::nshapes = 0;
+
+double Circle::area(void) {
+  return M_PI*radius*radius;
+}
+
+double Circle::perimeter(void) {
+  return 2*M_PI*radius;
+}
+
+double Square::area(void) {
+  return width*width;
+}
+
+double Square::perimeter(void) {
+  return 4*width;
+}
+
+Circle* createCircle(double w)
+{
+    return new Circle(w);
+}
+
+Square* createSquare(double w)
+{
+    return new Square(w);
+}
+
+ShapeOwner::ShapeOwner() {printf("  ShapeOwner(%p)\n",this);}
+ShapeOwner::~ShapeOwner()
+{
+    printf("  ~ShapeOwner(%p)\n",this);
+    for(unsigned i=0;i<shapes.size();i++)
+        delete shapes[i];
+}
+
+void ShapeOwner::add(Shape* ptr) // this method takes ownership of the object
+{
+    shapes.push_back(ptr);
+}
+
+Shape* ShapeOwner::get(int idx) // this pointer is still owned by the class (assessor)
+{
+    if (idx<0 || idx>=shapes.size())
+        return NULL;
+    return shapes[idx];
+}
+
+Shape* ShapeOwner::remove(int idx) // this method returns memory which must be deleted
+{
+    if (idx<0 || idx>=shapes.size())
+        return NULL;
+    Shape* ptr=shapes[idx];
+    shapes.erase(shapes.begin()+idx);
+    return ptr;
+}