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Add a static version of Object::cast_to()

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This is to prepare to replace all instances of the member version of
cast_to().
This commit is contained in:
Hein-Pieter van Braam 2017-08-24 21:58:13 +02:00
parent f61e8695c9
commit 4aa2c18cb4
1 changed files with 40 additions and 0 deletions
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40
core/object.h
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@ -558,6 +558,46 @@ public:
void add_change_receptor(Object *p_receptor);
void remove_change_receptor(Object *p_receptor);
template <class T>
static T *cast_to(Object *p_object) {
#ifdef DEBUG_ENABLED
// TODO there are some legitimate reasons to pass NULL as p_object.
// we need to figure out how to deal with that in debug mode.
// This code will return NULL for a NULL input in release mode also.
ERR_FAIL_COND_V(p_object == NULL, NULL);
#endif
#ifndef NO_SAFE_CAST
return dynamic_cast<T *>(p_object);
#else
if (!p_object)
return NULL;
if (p_pobject->is_class_ptr(T::get_class_ptr_static()))
return static_cast<T *>(p_pobject);
else
return NULL;
#endif
}
template <class T>
static const T *cast_to(const Object *p_object) {
#ifdef DEBUG_ENABLED
// TODO there are some legitimate reasons to pass NULL as p_object.
// we need to figure out how to deal with that in debug mode.
// This code will return NULL for a NULL input in release mode also.
ERR_FAIL_COND_V(p_object == NULL, NULL);
#endif
#ifndef NO_SAFE_CAST
return dynamic_cast<const T *>(p_object);
#else
if (!p_object)
return NULL;
if (p_pobject->is_class_ptr(T::get_class_ptr_static()))
return static_cast<const T *>(p_object);
else
return NULL;
#endif
}
// TODO: ensure 'this' is never NULL since it's UB, but by now, avoid warning flood
#ifdef __clang__
#pragma clang diagnostic push