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Исходный код Весь код находится в файле sigslot.h #ifndef _SIGSLOT_h_ #define _SIGSLOT_h_ // sigslot.h – autor Kluev Alexander kluev@pragmaworks.com
template <class Arg> class signal;
class slot { friend class signal_base; slot *_prev; slot *_next; struct Thunk {}; typedef void (Thunk::*Func)(); Thunk *_trg; Func _mfn; public: slot(): _trg(0), _mfn(0), _prev(0), _next(0) {} ~slot() {clear();} public: void clear() { if (_next) _next->_prev = _prev; if (_prev) _prev->_next = _next; _prev = _next = 0; } template <class Owner, class Arg> void init(signal<Arg>&sig, void (Owner::*mpfn)(Arg), Owner *This) { clear(); _trg = (Thunk*)This; _mfn = (Func)mpfn; sig._add(*this); } template <class Owner> void init(signal<void>&sig, void (Owner::*mpfn)(), Owner *This) { clear(); _trg = (Thunk*)This; _mfn = (Func)mpfn; sig._add(*this); } private: template <class Arg> void _call(Arg a) { typedef void (Thunk::*XFunc)(Arg); XFunc f = (XFunc)_mfn; (_trg->*f)(a); } void _call() { (_trg->*_mfn)(); } };
class signal_base { protected: friend class slot; slot _head; void _add(slot&s) { s._prev =&_head; s._next = _head._next; if (_head._next) _head._next->_prev =&s; _head._next =&s; } template <class Arg> void _raise(Arg a) { slot *p = _head._next; while (p) { p->_call(a); p = p->_next; } } void _raise() { slot *p = _head._next; while (p) { p->_call(); p = p->_next; } } public: ~signal_base() { clear(); } public: void clear() { while (_head._next) _head._next->clear(); } };
template <class Arg> class signal: public signal_base { public: void raise(Arg); };
typedef void VOID;
template <> void signal<VOID>::raise() { signal_base::_raise(); }
template <class Arg> void signal<Arg>::raise(Arg a) { signal_base::_raise(a); }
#endif // _SIGSLOT_h_
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