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