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#pragma once
#include "guid.h"
#ifdef WIN32
#ifndef NOVTABLE
#define NOVTABLE __declspec(novtable)
#endif
#else
#define NOVTABLE
#endif
#if defined(__GNUC__) && (defined(__x86_32__) || defined(__i386__))
#define WASABICALL __attribute__((stdcall))
#elif defined (_WIN32)
#define WASABICALL __stdcall
#else
#define WASABICALL
#endif
namespace Wasabi2
{
class NOVTABLE Dispatchable
{
protected:
Dispatchable(size_t _dispatchable_version) : dispatchable_version(_dispatchable_version) {}
~Dispatchable() {}
public:
#define dispatch_call(code, default_return, func) (DispatchValid(code))?(default_return):func
#define dispatch_voidcall(code, func) if (DispatchValid(code)) func
bool DispatchValid(size_t code) const
{
return code < dispatchable_version;
}
size_t Retain()
{
return Dispatchable_Retain();
}
size_t Release()
{
return Dispatchable_Release();
}
int QueryInterface(GUID interface_guid, void **object)
{
return Dispatchable_QueryInterface(interface_guid, object);
}
template <class ifc_t>
int QueryInterface(ifc_t **object)
{
return Dispatchable_QueryInterface(ifc_t::GetInterfaceGUID(), (void **)object);
}
protected:
virtual size_t WASABICALL Dispatchable_Retain() { return 0; }
virtual size_t WASABICALL Dispatchable_Release() { return 0; }
virtual int WASABICALL Dispatchable_QueryInterface(GUID interface_guid, void **object) { return 1; }
size_t dispatchable_version;
};
}
#ifndef DECLARE_EXTERNAL_SERVICE
#define DECLARE_EXTERNAL_SERVICE(_type, _name) extern _type *_name
#endif
#ifndef DEFINE_EXTERNAL_SERVICE
#define DEFINE_EXTERNAL_SERVICE(_type, _name) _type *_name=0
#endif
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