initial

CAD/Ultimaker 2 DIY/Firmware/20160823_UM2.1-Firmware-UM2.1/MarlinSimulator/component/delegate.h

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+#ifndef DELEGATE_H
+#define DELEGATE_H
+
+#include <stddef.h>
+/* Here be dragons... */
+
+template<typename A0=void, typename A1=void>
+class delegate
+{
+public:
+    delegate() : object_ptr(NULL), stub_ptr(NULL)
+    {
+    }
+
+    template <class T, void (T::*TMethod)(A0 a0, A1 a1)>
+    static delegate from_method(T* object_ptr)
+    {
+        delegate d;
+        d.object_ptr = object_ptr;
+        d.stub_ptr = &method_stub<T, TMethod>;
+        return d;
+    }
+
+    void operator()(A0 a0, A1 a1) const
+    {
+        if (!object_ptr)
+            return;
+        return stub_ptr(object_ptr, a0, a1);
+    }
+    
+    operator bool() const { return object_ptr != NULL; }
+
+private:
+    typedef void (*stub_type)(void* object_ptr, A0 a0, A1 a1);
+
+    void* object_ptr;
+    stub_type stub_ptr;
+    
+    template <class T, void (T::*TMethod)(A0 a0, A1 a1)>
+    static void method_stub(void* object_ptr, A0 a0, A1 a1)
+    {
+        T* p = static_cast<T*>(object_ptr);
+        return (p->*TMethod)(a0, a1);
+    }
+};
+
+#define DELEGATE(DelegateType, Type, Object, Method) (DelegateType::from_method<Type, &Type::Method>(&Object))
+              
+#endif//DELEGATE_H