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Add callable_mp_static

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Allows using a static (C) function as a callable.
This commit is contained in:
reduz 2022-05-21 18:48:50 +02:00
parent 8adf048045
commit 4177e5c7c7
1 changed files with 82 additions and 0 deletions
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82
core/object/callable_method_pointer.h
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@ -245,4 +245,86 @@ Callable create_custom_callable_function_pointer(T *p_instance,
#define callable_mp(I, M) create_custom_callable_function_pointer(I, M)
#endif
// STATIC VERSIONS
template <class... P>
class CallableCustomStaticMethodPointer : public CallableCustomMethodPointerBase {
struct Data {
void (*method)(P...);
} data;
public:
virtual ObjectID get_object() const {
return ObjectID();
}
virtual void call(const Variant **p_arguments, int p_argcount, Variant &r_return_value, Callable::CallError &r_call_error) const {
call_with_variant_args_static_ret(data.method, p_arguments, p_argcount, r_return_value, r_call_error);
r_return_value = Variant();
}
CallableCustomStaticMethodPointer(void (*p_method)(P...)) {
memset(&data, 0, sizeof(Data)); // Clear beforehand, may have padding bytes.
data.method = p_method;
_setup((uint32_t *)&data, sizeof(Data));
}
};
template <class T, class... P>
Callable create_custom_callable_static_function_pointer(
#ifdef DEBUG_METHODS_ENABLED
const char *p_func_text,
#endif
void (*p_method)(P...)) {
typedef CallableCustomStaticMethodPointer<P...> CCMP; // Messes with memnew otherwise.
CCMP *ccmp = memnew(CCMP(p_method));
#ifdef DEBUG_METHODS_ENABLED
ccmp->set_text(p_func_text + 1); // Try to get rid of the ampersand.
#endif
return Callable(ccmp);
}
template <class R, class... P>
class CallableCustomStaticMethodPointerRet : public CallableCustomMethodPointerBase {
struct Data {
R(*method)
(P...);
} data;
public:
virtual ObjectID get_object() const {
return ObjectID();
}
virtual void call(const Variant **p_arguments, int p_argcount, Variant &r_return_value, Callable::CallError &r_call_error) const {
call_with_variant_args_static_ret(data.method, p_arguments, p_argcount, r_return_value, r_call_error);
}
CallableCustomStaticMethodPointerRet(R (*p_method)(P...)) {
memset(&data, 0, sizeof(Data)); // Clear beforehand, may have padding bytes.
data.method = p_method;
_setup((uint32_t *)&data, sizeof(Data));
}
};
template <class R, class... P>
Callable create_custom_callable_static_function_pointer(
#ifdef DEBUG_METHODS_ENABLED
const char *p_func_text,
#endif
R (*p_method)(P...)) {
typedef CallableCustomStaticMethodPointerRet<R, P...> CCMP; // Messes with memnew otherwise.
CCMP *ccmp = memnew(CCMP(p_method));
#ifdef DEBUG_METHODS_ENABLED
ccmp->set_text(p_func_text + 1); // Try to get rid of the ampersand.
#endif
return Callable(ccmp);
}
#ifdef DEBUG_METHODS_ENABLED
#define callable_mp_static(M) create_custom_callable_static_function_pointer(#M, M)
#else
#define callable_mp_static(M) create_custom_callable_static_function_pointer(M)
#endif
#endif // CALLABLE_METHOD_POINTER_H