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feat: added macros for casting typeclass exporting mirror

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Sara 2024-01-18 13:22:55 +01:00
parent 986ab06478
commit 9597d612af
1 changed files with 18 additions and 1 deletions
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19
core/src/mirror.h
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@ -43,6 +43,22 @@ extern const void* mirror_get_typeclass(void* data, IMirror const* tc, const cha
//
extern void* mirror_get_function(void* data, IMirror const* tc, const char* typeclass_name);
// macro reexport of mirror_get_function which will cast the function so it can be called immediately
// example:
// MIRROR_GET_WRAP_FUNC(physics_entity.data, physics_entity.mirror, BehaviourEntity)(physics_entity.data)
#define MIRROR_GET_WRAP_FUNC(Data_, MirrorTc_, Typeclass_)\
((Typeclass_(*)(void*))mirror_get_function(Data_, MirrorTc_, #Typeclass_))
// casting only works if the typeclass in question exposes IMirror as .mirror
// will segfault if the Mirror does not expose To_
// example:
// TC_CAST(physics_entity, BehaviourEntity)
#define TC_CAST(From_, To_)\
MIRROR_GET_WRAP_FUNC(From_.data, From_.mirror, To_)(From_.data)
#define TC_MIRRORS(From_, To_)\
MIRROR_GET_WRAP_FUNC(From_.data, From_.mirror, To_) != NULL
#define MIRROR_TRY_WRAP(Into_, Mirror_, Typeclass_){\
MirroredTypeclassWrapFunc fn_ = mirror_get_typeclass(Mirror_, #Typeclass_);\
if(fn_ != NULL) {\
@ -89,7 +105,8 @@ List* T##_get_typeclasses(T* self) {\
if(!init_flag) {\
init_flag = 1;\
typeclasses = list_init(sizeof(MirroredTypeclass));\
MirroredTypeclass tc;
MirroredTypeclass tc;\
REFLECT_TYPECLASS(T, Mirror)
#define REFLECT_TYPECLASS(T, TypeClass_)\
tc = (MirroredTypeclass){\