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complete c++ overhaul

master
Marc Alexander Lehmann 14 years ago
parent
commit
79531a989f
  1. 142
      ev++.h

142
ev++.h

@ -5,29 +5,83 @@
namespace ev {
template<class watcher>
class callback
template<class ev_watcher, class watcher>
struct base : ev_watcher
{
struct klass; // it is vital that this is never defined
#if EV_MULTIPLICITY
EV_P;
klass *o;
void (klass::*m)(watcher &, int);
void set (EV_P)
{
this->EV_A = EV_A;
}
#endif
public:
template<class O1, class O2>
explicit callback (O1 *object, void (O2::*method)(watcher &, int))
base ()
{
ev_init (this, 0);
}
void set_ (void *object, void (*cb)(ev_watcher *w, int revents))
{
this->data = object;
ev_set_cb (static_cast<ev_watcher *>(this), cb);
}
template<class K, void (K::*method)(watcher &w, int)>
void set (K *object)
{
set_ (object, method_thunk<K, method>);
}
template<class K, void (K::*method)(watcher &w, int)>
static void method_thunk (ev_watcher *w, int revents)
{
watcher *self = static_cast<watcher *>(w);
K *obj = static_cast<K *>(self->data);
(obj->*method) (*self, revents);
}
template<class K, void (K::*method)(watcher &w, int) const>
void set (const K *object)
{
set_ (object, const_method_thunk<K, method>);
}
template<class K, void (K::*method)(watcher &w, int) const>
static void const_method_thunk (ev_watcher *w, int revents)
{
watcher *self = static_cast<watcher *>(w);
K *obj = static_cast<K *>(self->data);
(obj->*method) (*self, revents);
}
template<void (*function)(watcher &w, int)>
void set ()
{
set_ (0, function_thunk<function>);
}
template<void (*function)(watcher &w, int)>
static void function_thunk (ev_watcher *w, int revents)
{
watcher *self = static_cast<watcher *>(w);
function (*self, revents);
}
void operator ()(int events = EV_UNDEF)
{
o = reinterpret_cast<klass *>(object);
m = reinterpret_cast<void (klass::*)(watcher &, int)>(method);
return e_cb (static_cast<ev_watcher *>(this)) (events);
}
// this works because a standards-compliant C++ compiler
// basically can't help it: it doesn't have the knowledge
// required to miscompile (klass is not defined anywhere
// and nothing is known about the constructor arguments) :)
void call (watcher *w, int revents)
bool is_active () const
{
(o->*m) (*w, revents);
return ev_is_active (static_cast<const ev_watcher *>(this));
}
bool is_pending () const
{
return ev_is_pending (static_cast<const ev_watcher *>(this));
}
};
@ -57,49 +111,24 @@ namespace ev {
}
#if EV_MULTIPLICITY
#define EV_CONSTRUCT(cppstem) \
EV_P; \
\
void set (EV_P) \
#define EV_CONSTRUCT \
(EV_P = EV_DEFAULT) \
{ \
this->EV_A = EV_A; \
} \
\
template<class O1, class O2> \
explicit cppstem (O1 *object, void (O2::*method)(cppstem &, int), EV_P = ev_default_loop (0)) \
: callback<cppstem> (object, method), EV_A (EV_A)
set (EV_A); \
}
#else
#define EV_CONSTRUCT(cppstem) \
template<class O1, class O2> \
explicit cppstem (O1 *object, void (O2::*method)(cppstem &, int)) \
: callback<cppstem> (object, method)
#define EV_CONSTRUCT \
() \
{ \
}
#endif
/* using a template here would require quite a bit more lines,
* so a macro solution was chosen */
#define EV_BEGIN_WATCHER(cppstem,cstem) \
\
struct cppstem : ev_ ## cstem, callback<cppstem> \
struct cppstem : base<ev_ ## cstem, cppstem> \
{ \
EV_CONSTRUCT (cppstem) \
{ \
ev_init (static_cast<ev_ ## cstem *>(this), thunk); \
} \
\
bool is_active () const \
{ \
return ev_is_active (static_cast<const ev_ ## cstem *>(this)); \
} \
\
bool is_pending () const \
{ \
return ev_is_pending (static_cast<const ev_ ## cstem *>(this)); \
} \
\
void start () \
{ \
ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \
@ -110,29 +139,22 @@ namespace ev {
ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \
} \
\
void operator ()(int events = EV_UNDEF) \
{ \
return call (this, events); \
} \
cppstem EV_CONSTRUCT \
\
~cppstem () \
{ \
stop (); \
} \
\
using base<ev_ ## cstem, cppstem>::set; \
\
private: \
\
cppstem (const cppstem &o) \
: callback<cppstem> (this, (void (cppstem::*)(cppstem &, int))0) \
{ /* disabled */ } \
\
void operator =(const cppstem &o) { /* disabled */ } \
\
static void thunk (EV_P_ struct ev_ ## cstem *w, int revents) \
{ \
(*static_cast<cppstem *>(w))(revents); \
} \
\
public:
#define EV_END_WATCHER(cppstem,cstem) \

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