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/**
* Method.h
*/
/**
* Namespace
*/
namespace Php {
/**
* A very generic function pointer
*/
typedef void (*function_ptr)();
/**
* Base class of the method
*/
class _Method
{
public:
/**
* Copy constructor
* @param method
*/
_Method(const _Method &method) : _type(method._type), _callback(method._callback) {}
/**
* Destructor
* @param type
* @param callback
*/
virtual ~_Method() {}
/**
* Invoke the method
* @param parameters
* @return Value
*/
Value invoke(Parameters ¶meters)
{
// the object to call a method on
Base *base = parameters.object();
// find out which method to call, and call it
switch (_type) {
case 0: (base->*_callback.m0)(); return Value();
case 1: (base->*_callback.m1)(parameters); return Value();
case 2: return (base->*_callback.m2)();
case 3: return (base->*_callback.m3)(parameters);
default: return Value();
}
}
protected:
/**
* Protected constructor to prevent that anyone instantiates this object
*/
_Method(method_callback_0 callback) : _type(0) { _callback.m0 = callback; }
_Method(method_callback_1 callback) : _type(1) { _callback.m1 = callback; }
_Method(method_callback_2 callback) : _type(2) { _callback.m2 = callback; }
_Method(method_callback_3 callback) : _type(3) { _callback.m3 = callback; }
private:
/**
* Callback type
* @var int
*/
int _type;
/**
* The actual callback
* @var void*
*/
union {
method_callback_0 m0;
method_callback_1 m1;
method_callback_2 m2;
method_callback_3 m3;
} _callback;
};
/**
* Actual template class of the method
*/
template <typename T>
class Method : public _Method
{
public:
/**
* Constructor
* @param callback
*/
Method(void(T::*callback)()) : _Method(static_cast<method_callback_0>(callback)) {}
Method(void(T::*callback)(Parameters&)) : _Method(static_cast<method_callback_1>(callback)) {}
Method(Value(T::*callback)()) : _Method(static_cast<method_callback_2>(callback)) {}
Method(Value(T::*callback)(Parameters&)) : _Method(static_cast<method_callback_3>(callback)) {}
/**
* Destructor
*/
virtual ~Method() {}
};
/**
* End of namespace
*/
}
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