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Merge pull request #19 from GodotNativeTools/template-magic 

template magic
pull/16/merge
Thomas Herzog 2017-07-23 17:15:37 +02:00 committed by GitHub
parent 606d2624af ee4ac30b40
commit fd852eae54
1 changed files with 71 additions and 359 deletions
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408
include/core/Godot.hpp
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@ -172,377 +172,89 @@ char *___get_method_class_name(R (T::*p)(args... a) const)
} }
// wohooo, let the fun begin.
template<class T, class R>
struct _WrappedMethod0 {
R (T::*f)();
static godot_variant __wrapped_method(godot_object *, void *method_data, void *user_data, int num_args, godot_variant **args)
{
godot_variant v;
godot_variant_new_nil(&v);
T *obj = (T *) user_data;
_WrappedMethod0<T, R> *method = (_WrappedMethod0<T, R>*) method_data;
Variant *var = (Variant *) &v;
*var = (obj->*(method->f))();
return v; // Okay, time for some template magic.
// Many thanks to manpat from the GDL Discord Server.
// This is stuff that's available in C++14 I think, but whatever.
template<int... I>
struct __Sequence{};
template<int N, int... I>
struct __construct_sequence {
using type = typename __construct_sequence<N-1, N-1, I...>::type;
};
template<int... I>
struct __construct_sequence<0, I...> {
using type = __Sequence<I...>;
};
// Now the wrapping part.
template<class T, class R, class... As>
struct _WrappedMethod {
R (T::*f)(As...);
template<int... I>
void apply(Variant* ret, T* obj, Variant** args, __Sequence<I...>) {
*ret = (obj->*f)( _ArgCast<As>::_arg_cast(*args[I])... );
}
};
template<class T, class... As>
struct _WrappedMethod<T, void, As...> {
void (T::*f)(As...);
template<int... I>
void apply(Variant* ret, T* obj, Variant** args, __Sequence<I...>) {
(obj->*f)( _ArgCast<As>::_arg_cast(*args[I])... );
} }
}; };
template<class T> template<class T, class R, class... As>
struct _WrappedMethod0<T, void> { godot_variant __wrapped_method(godot_object *, void *method_data, void *user_data, int num_args, godot_variant **args)
void (T::*f)(); {
static godot_variant __wrapped_method(godot_object *, void *method_data, void *user_data, int num_args, godot_variant **args)
{
godot_variant v; godot_variant v;
godot_variant_new_nil(&v); godot_variant_new_nil(&v);
T *obj = (T *) user_data; T *obj = (T *) user_data;
_WrappedMethod0<T, void> *method = (_WrappedMethod0<T, void>*) method_data; _WrappedMethod<T, R, As...> *method = (_WrappedMethod<T, R, As...>*) method_data;
(obj->*(method->f))();
return v;
}
};
template<class T, class R>
void *___make_wrapper_function(R (T::*f)())
{
_WrappedMethod0<T, R> *p = (_WrappedMethod0<T, R> *) malloc(sizeof(_WrappedMethod0<T, R>));
p->f = f;
return (void *) p;
}
template<class T, class R>
__godot_wrapper_method ___get_wrapper_function(R (T::*f)())
{
return (__godot_wrapper_method) &_WrappedMethod0<T, R>::__wrapped_method;
}
template<class T, class R, class A0>
struct _WrappedMethod1 {
R (T::*f)(A0);
static godot_variant __wrapped_method(godot_object *, void *method_data, void *user_data, int num_args, godot_variant **args)
{
godot_variant v;
godot_variant_new_nil(&v);
T *obj = (T *) user_data;
_WrappedMethod1<T, R, A0> *method = (_WrappedMethod1<T, R, A0>*) method_data;
Variant *var = (Variant *) &v; Variant *var = (Variant *) &v;
Variant **arg = (Variant **) args; Variant **arg = (Variant **) args;
*var = (obj->*(method->f))(_ArgCast<A0>::_arg_cast(*arg[0])); method->apply(var, obj, arg, typename __construct_sequence<sizeof...(As)>::type {});
return v; return v;
} }
};
template<class T, class A0> template<class T, class R, class... As>
struct _WrappedMethod1<T, void, A0> { void *___make_wrapper_function(R (T::*f)(As...))
void (T::*f)(A0);
static godot_variant __wrapped_method(godot_object *, void *method_data, void *user_data, int num_args, godot_variant **args)
{
godot_variant v;
godot_variant_new_nil(&v);
T *obj = (T *) user_data;
_WrappedMethod1<T, void, A0> *method = (_WrappedMethod1<T, void, A0>*) method_data;
Variant **arg = (Variant **) args;
(obj->*(method->f))(_ArgCast<A0>::_arg_cast(*arg[0]));
return v;
}
};
template<class T, class R, class A0>
void *___make_wrapper_function(R (T::*f)(A0))
{ {
_WrappedMethod1<T, R, A0> *p = (_WrappedMethod1<T, R, A0> *) malloc(sizeof(_WrappedMethod1<T, R, A0>)); using MethodType = _WrappedMethod<T, R, As...>;
MethodType *p = (MethodType *) godot_alloc(sizeof(MethodType));
p->f = f; p->f = f;
return (void *) p; return (void *) p;
} }
template<class T, class R, class A0> template<class T, class R, class... As>
__godot_wrapper_method ___get_wrapper_function(R (T::*f)(A0)) __godot_wrapper_method ___get_wrapper_function(R (T::*f)(As...))
{ {
return (__godot_wrapper_method) &_WrappedMethod1<T, R, A0>::__wrapped_method; return (__godot_wrapper_method) &__wrapped_method<T, R, As...>;
} }
template<class T, class R, class A0, class A1>
struct _WrappedMethod2 {
R (T::*f)(A0, A1);
static godot_variant __wrapped_method(godot_object *, void *method_data, void *user_data, int num_args, godot_variant **args)
{
godot_variant v;
godot_variant_new_nil(&v);
T *obj = (T *) user_data;
_WrappedMethod2<T, R, A0, A1> *method = (_WrappedMethod2<T, R, A0, A1>*) method_data;
Variant *var = (Variant *) &v;
Variant **arg = (Variant **) args;
*var = (obj->*(method->f))(_ArgCast<A0>::_arg_cast(*arg[0]), _ArgCast<A1>::_arg_cast(*arg[1]));
return v;
}
};
template<class T, class A0, class A1>
struct _WrappedMethod2<T, void, A0, A1> {
void (T::*f)(A0, A1);
static godot_variant __wrapped_method(godot_object *, void *method_data, void *user_data, int num_args, godot_variant **args)
{
godot_variant v;
godot_variant_new_nil(&v);
T *obj = (T *) user_data;
_WrappedMethod2<T, void, A0, A1> *method = (_WrappedMethod2<T, void, A0, A1>*) method_data;
Variant **arg = (Variant **) args;
(obj->*(method->f))(_ArgCast<A0>::_arg_cast(*arg[0]), _ArgCast<A1>::_arg_cast(*arg[1]));
return v;
}
};
template<class T, class R, class A0, class A1>
void *___make_wrapper_function(R (T::*f)(A0, A1))
{
_WrappedMethod2<T, R, A0, A1> *p = (_WrappedMethod2<T, R, A0, A1> *) malloc(sizeof(_WrappedMethod2<T, R, A0, A1>));
p->f = f;
return (void *) p;
}
template<class T, class R, class A0, class A1>
__godot_wrapper_method ___get_wrapper_function(R (T::*f)(A0, A1))
{
return (__godot_wrapper_method) &_WrappedMethod2<T, R, A0, A1>::__wrapped_method;
}
template<class T, class R, class A0, class A1, class A2>
struct _WrappedMethod3 {
R (T::*f)(A0, A1, A2);
static godot_variant __wrapped_method(godot_object *, void *method_data, void *user_data, int num_args, godot_variant **args)
{
godot_variant v;
godot_variant_new_nil(&v);
T *obj = (T *) user_data;
_WrappedMethod3<T, R, A0, A1, A2> *method = (_WrappedMethod3<T, R, A0, A1, A2>*) method_data;
Variant *var = (Variant *) &v;
Variant **arg = (Variant **) args;
*var = (obj->*(method->f))(_ArgCast<A0>::_arg_cast(*arg[0]), _ArgCast<A1>::_arg_cast(*arg[1]), _ArgCast<A2>::_arg_cast(*arg[2]));
return v;
}
};
template<class T, class A0, class A1, class A2>
struct _WrappedMethod3<T, void, A0, A1, A2> {
void (T::*f)(A0, A1, A2);
static godot_variant __wrapped_method(godot_object *, void *method_data, void *user_data, int num_args, godot_variant **args)
{
godot_variant v;
godot_variant_new_nil(&v);
T *obj = (T *) user_data;
_WrappedMethod3<T, void, A0, A1, A2> *method = (_WrappedMethod3<T, void, A0, A1, A2>*) method_data;
Variant **arg = (Variant **) args;
(obj->*(method->f))(_ArgCast<A0>::_arg_cast(*arg[0]), _ArgCast<A1>::_arg_cast(*arg[1]), _ArgCast<A2>::_arg_cast(*arg[2]));
return v;
}
};
template<class T, class R, class A0, class A1, class A2>
void *___make_wrapper_function(R (T::*f)(A0, A1, A2))
{
_WrappedMethod3<T, R, A0, A1, A2> *p = (_WrappedMethod3<T, R, A0, A1, A2> *) malloc(sizeof(_WrappedMethod3<T, R, A0, A1, A2>));
p->f = f;
return (void *) p;
}
template<class T, class R, class A0, class A1, class A2>
__godot_wrapper_method ___get_wrapper_function(R (T::*f)(A0, A1, A2))
{
return (__godot_wrapper_method) &_WrappedMethod3<T, R, A0, A1, A2>::__wrapped_method;
}
template<class T, class R, class A0, class A1, class A2, class A3>
struct _WrappedMethod4 {
R (T::*f)(A0, A1, A2, A3);
static godot_variant __wrapped_method(godot_object *, void *method_data, void *user_data, int num_args, godot_variant **args)
{
godot_variant v;
godot_variant_new_nil(&v);
T *obj = (T *) user_data;
_WrappedMethod4<T, R, A0, A1, A2, A3> *method = (_WrappedMethod4<T, R, A0, A1, A2, A3>*) method_data;
Variant *var = (Variant *) &v;
Variant **arg = (Variant **) args;
*var = (obj->*(method->f))(_ArgCast<A0>::_arg_cast(*arg[0]), _ArgCast<A1>::_arg_cast(*arg[1]), _ArgCast<A2>::_arg_cast(*arg[2]), _ArgCast<A3>::_arg_cast(*arg[3]));
return v;
}
};
template<class T, class A0, class A1, class A2, class A3>
struct _WrappedMethod4<T, void, A0, A1, A2, A3> {
void (T::*f)(A0, A1, A2, A3);
static godot_variant __wrapped_method(godot_object *, void *method_data, void *user_data, int num_args, godot_variant **args)
{
godot_variant v;
godot_variant_new_nil(&v);
T *obj = (T *) user_data;
_WrappedMethod4<T, void, A0, A1, A2, A3> *method = (_WrappedMethod4<T, void, A0, A1, A2, A3>*) method_data;
Variant **arg = (Variant **) args;
(obj->*(method->f))(_ArgCast<A0>::_arg_cast(*arg[0]), _ArgCast<A1>::_arg_cast(*arg[1]), _ArgCast<A2>::_arg_cast(*arg[2]), _ArgCast<A3>::_arg_cast(*arg[3]));
return v;
}
};
template<class T, class R, class A0, class A1, class A2, class A3>
void *___make_wrapper_function(R (T::*f)(A0, A1, A2, A3))
{
_WrappedMethod4<T, R, A0, A1, A2, A3> *p = (_WrappedMethod4<T, R, A0, A1, A2, A3> *) malloc(sizeof(_WrappedMethod4<T, R, A0, A1, A2, A3>));
p->f = f;
return (void *) p;
}
template<class T, class R, class A0, class A1, class A2, class A3>
__godot_wrapper_method ___get_wrapper_function(R (T::*f)(A0, A1, A2, A3))
{
return (__godot_wrapper_method) &_WrappedMethod4<T, R, A0, A1, A2, A3>::__wrapped_method;
}
template<class T, class R, class A0, class A1, class A2, class A3, class A4>
struct _WrappedMethod5 {
R (T::*f)(A0, A1, A2, A3, A4);
static godot_variant __wrapped_method(godot_object *, void *method_data, void *user_data, int num_args, godot_variant **args)
{
godot_variant v;
godot_variant_new_nil(&v);
T *obj = (T *) user_data;
_WrappedMethod5<T, R, A0, A1, A2, A3, A4> *method = (_WrappedMethod5<T, R, A0, A1, A2, A3, A4>*) method_data;
Variant *var = (Variant *) &v;
Variant **arg = (Variant **) args;
*var = (obj->*(method->f))(_ArgCast<A0>::_arg_cast(*arg[0]), _ArgCast<A1>::_arg_cast(*arg[1]), _ArgCast<A2>::_arg_cast(*arg[2]), _ArgCast<A3>::_arg_cast(*arg[3]), _ArgCast<A4>::_arg_cast(*arg[4]));
return v;
}
};
template<class T, class A0, class A1, class A2, class A3, class A4>
struct _WrappedMethod5<T, void, A0, A1, A2, A3, A4> {
void (T::*f)(A0, A1, A2, A3, A4);
static godot_variant __wrapped_method(godot_object *, void *method_data, void *user_data, int num_args, godot_variant **args)
{
godot_variant v;
godot_variant_new_nil(&v);
T *obj = (T *) user_data;
_WrappedMethod5<T, void, A0, A1, A2, A3, A4> *method = (_WrappedMethod5<T, void, A0, A1, A2, A3, A4>*) method_data;
Variant **arg = (Variant **) args;
(obj->*(method->f))(_ArgCast<A0>::_arg_cast(*arg[0]), _ArgCast<A1>::_arg_cast(*arg[1]), _ArgCast<A2>::_arg_cast(*arg[2]), _ArgCast<A3>::_arg_cast(*arg[3]), _ArgCast<A4>::_arg_cast(*arg[4]));
return v;
}
};
template<class T, class R, class A0, class A1, class A2, class A3, class A4>
void *___make_wrapper_function(R (T::*f)(A0, A1, A2, A3, A4))
{
_WrappedMethod5<T, R, A0, A1, A2, A3, A4> *p = (_WrappedMethod5<T, R, A0, A1, A2, A3, A4> *) malloc(sizeof(_WrappedMethod5<T, R, A0, A1, A2, A3, A4>));
p->f = f;
return (void *) p;
}
template<class T, class R, class A0, class A1, class A2, class A3, class A4>
__godot_wrapper_method ___get_wrapper_function(R (T::*f)(A0, A1, A2, A3, A4))
{
return (__godot_wrapper_method) &_WrappedMethod5<T, R, A0, A1, A2, A3, A4>::__wrapped_method;
}
template<class T, class R, class ...A> template<class T, class R, class ...A>
void *___make_wrapper_function(R (T::*f)(A...) const) void *___make_wrapper_function(R (T::*f)(A...) const)
{ {
@ -573,7 +285,7 @@ void register_method(char *name, M method_ptr, godot_method_rpc_mode rpc_type =
{ {
godot_instance_method method = {}; godot_instance_method method = {};
method.method_data = ___make_wrapper_function(method_ptr); method.method_data = ___make_wrapper_function(method_ptr);
method.free_func = free; method.free_func = godot_free;
method.method = (__godot_wrapper_method) ___get_wrapper_function(method_ptr); method.method = (__godot_wrapper_method) ___get_wrapper_function(method_ptr);
@ -682,20 +394,20 @@ void register_property(char *name, P (T::*var), P default_value, godot_method_rp
attr.usage = usage; attr.usage = usage;
attr.hint_string = *_hint_string; attr.hint_string = *_hint_string;
_PropertyDefaultSetFunc<T, P> *wrapped_set = (_PropertyDefaultSetFunc<T, P> *) malloc(sizeof(_PropertyDefaultSetFunc<T, P>)); _PropertyDefaultSetFunc<T, P> *wrapped_set = (_PropertyDefaultSetFunc<T, P> *) godot_alloc(sizeof(_PropertyDefaultSetFunc<T, P>));
wrapped_set->f = var; wrapped_set->f = var;
_PropertyDefaultGetFunc<T, P> *wrapped_get = (_PropertyDefaultGetFunc<T, P> *) malloc(sizeof(_PropertyDefaultGetFunc<T, P>)); _PropertyDefaultGetFunc<T, P> *wrapped_get = (_PropertyDefaultGetFunc<T, P> *) godot_alloc(sizeof(_PropertyDefaultGetFunc<T, P>));
wrapped_get->f = var; wrapped_get->f = var;
godot_property_set_func set_func = {}; godot_property_set_func set_func = {};
set_func.method_data = (void *) wrapped_set; set_func.method_data = (void *) wrapped_set;
set_func.free_func = free; set_func.free_func = godot_free;
set_func.set_func = &_PropertyDefaultSetFunc<T, P>::_wrapped_setter; set_func.set_func = &_PropertyDefaultSetFunc<T, P>::_wrapped_setter;
godot_property_get_func get_func = {}; godot_property_get_func get_func = {};
get_func.method_data = (void *) wrapped_get; get_func.method_data = (void *) wrapped_get;
get_func.free_func = free; get_func.free_func = godot_free;
get_func.get_func = &_PropertyDefaultGetFunc<T, P>::_wrapped_getter; get_func.get_func = &_PropertyDefaultGetFunc<T, P>::_wrapped_getter;
godot_script_register_property(T::___get_type_name(), name, &attr, set_func, get_func); godot_script_register_property(T::___get_type_name(), name, &attr, set_func, get_func);
@ -716,20 +428,20 @@ void register_property(char *name, void (T::*setter)(P), P (T::*getter)(), P def
attr.rset_type = rpc_mode; attr.rset_type = rpc_mode;
attr.usage = usage; attr.usage = usage;
_PropertySetFunc<T, P> *wrapped_set = (_PropertySetFunc<T, P> *) malloc(sizeof(_PropertySetFunc<T, P>)); _PropertySetFunc<T, P> *wrapped_set = (_PropertySetFunc<T, P> *) godot_alloc(sizeof(_PropertySetFunc<T, P>));
wrapped_set->f = setter; wrapped_set->f = setter;
_PropertyGetFunc<T, P> *wrapped_get = (_PropertyGetFunc<T, P> *) malloc(sizeof(_PropertyGetFunc<T, P>)); _PropertyGetFunc<T, P> *wrapped_get = (_PropertyGetFunc<T, P> *) godot_alloc(sizeof(_PropertyGetFunc<T, P>));
wrapped_get->f = getter; wrapped_get->f = getter;
godot_property_set_func set_func = {}; godot_property_set_func set_func = {};
set_func.method_data = (void *) wrapped_set; set_func.method_data = (void *) wrapped_set;
set_func.free_func = free; set_func.free_func = godot_free;
set_func.set_func = &_PropertySetFunc<T, P>::_wrapped_setter; set_func.set_func = &_PropertySetFunc<T, P>::_wrapped_setter;
godot_property_get_func get_func = {}; godot_property_get_func get_func = {};
get_func.method_data = (void *) wrapped_get; get_func.method_data = (void *) wrapped_get;
get_func.free_func = free; get_func.free_func = godot_free;
get_func.get_func = &_PropertyGetFunc<T, P>::_wrapped_getter; get_func.get_func = &_PropertyGetFunc<T, P>::_wrapped_getter;
godot_script_register_property(T::___get_type_name(), name, &attr, set_func, get_func); godot_script_register_property(T::___get_type_name(), name, &attr, set_func, get_func);